2BKKX-K20SMAUltrasonic Humidifier

Cool Mist Ultrasonic Humidifier ALK-KH-K20SMA User's Guide Thanks for your purchase. We provide a one-year warranty. If any quality issues, replacement or refund is available. Please feel free to contact us via E-mail: [email protected] *Amazon, Alexa and all related logos are trademarks of Amazon. com, Inc. or its affiliates. Precautions All pictures shown are for illustration purposes only. Please read this manual carefully before using Thank you for purchasing our humidifier ALK-KH-K20SMA and keep it for future reference. Actual products may vary due to product enhancement. For more installation information, please visit the official website link or scan the QR code: https://keecoon.com/pages/customer-instruction-manual Safety Guide 1-2 Components 3 Placement 4 Installation 5-6 Control Panel& Remote Control 8-9 Water filling &Use of Essential Oil 7 After Using the Humidifier12 Maintenance 10-11 FAQ 13-14 Product Specifications 15 Warranty 16-17 0101 Safety Guide 010101010101 Do not disassemble or modify the machine. Do not subject the machine to strong impacts. Turn off the machine before moving it. Do not connect the machine to a socket that exceeds the rated voltage or use an extension cable, as this may cause fire or electric shock. If the plug or wire becomes abnormally hot, stop using the machine immediately. Do not unplug the power plug with wet hands, as this may cause electric shock or injury. Do not use acidic detergents in the main body, as they may produce toxic gas. Children should use the machine under adult supervision. When the machine is not in use for more than 24 hours, please pour out the water from the water tank and main body to prevent mold or impurities from harming your health. Before the first use, leave the machine at room temperature for 30 minutes to avoid damage to the water tank due to sudden temperature changes. Do not put essential oil into the main body or water tank, as this may cause water leakage, deformation or failure. Do not block the outlet or add water to the mist outlet, as this may cause water leakage, deformation or failure. Do not block the outlet or add water to the mist outlet, as this may cause water leakage, deformation or failure. Keep a safe distance when the humidifier is spraying mist, especially if you have a sensitive respiratory tract. 02 Safety Guide 0202 Use the machine at normal room temperature, which ranges from 5°C to 40°C. When the room temperature drops below 0°C, please pour out the water in the water tank and sink to avoid freezing and damaging the machine. Note: The above safety guide is for your reference only. Please read the user manual carefully before using the machine. If you have any questions, please contact customer service. Remote Control Tube Components 03 Water Pipe Pump Connector Atomizers Main Body W Float ater Pump Cover LED Display Water Tank Mist Outlet Tank Handle Aroma Box Power Cord Main Body Fan Outlet Water Inlet Water Outlet Place the humidifier in a horizontal position that is more than 20 cm away from walls, furniture, household appliances, and other objects. Do not use the humidifier in the following sit uations to avoid water leakage, signal jamming, damage or injury: In direct sunlight. On an unstable platform. In high temperatures, humidity, or dust. Near the air conditioner, heater, or stove. Under tables, or on the carpets, bedding, etc. Near the radio and other objects that emit radio waves. Near mobile phones, computers, and other precision instruments. Placement 04 1. Take out all parts of the humidifier, remove the protective bag from the water pump. 4. Place the main body on the water tank properly 2. Install the base. 3. Please install the battery before use (note that the battery needs to be prepared by yourself). Installation 05 5.Install the misting nozzle and extended tube as you like. Note: If the water pump fails to pump water, please try disassembling it along with the water pipe and then reinstalling them. To remove the pump, turn the connector counterclockwise, and to reinstall it, turn the connector clockwise. Installation 06 Water Filling & Use of Essential Oil 07 Add water from the top. Add water from the water tank. To use essential oils, click on the tray on the back of the machine, and it will pop out. Add water below 40°C to the water tank. Do not exceed the max water line. Do not let the water int o the mist outlet to avoid machine failure. Do not add mineral water, plasma water, or tap water that has been left for a long time. If mold or impurities breed, it may cause health problems. When the water level is low, the machine will prompt for water shortage and shut down automatically. Refill the water and turn it back on. Place a tissue or sponge underneath before adding essential oil. Do not put essential oil directly into the water tank or sink, as it may cause water leakage, deformation or failure. %RH h 08 The control panel and remote control allow you to operate the humidifier with ease. Here is a breakdown of the various functions: Light Function Indicator Mist Level Indicator Humidity Function Indicator Timer Function Indicator Digital Screen: The screen display will switch between mist level and relative humidity(RH) percentage Sleep Function Indicator Mist Level Button Humidity Button Light Button Timer Button Sleep Button Power Button Control Panel & Remote Control 09 The operationof remote control is the sameas the control panel. Pleaseremove the insulating plastic sheet beforeusing the remote control. Control Panel & Remote Control This button turns on the humidifier when pressed. The display will light up, and the humidifier will start working. This button allows you to set the humidity level between 40-90% in increments of 5%. The humidifier will automatically stop spraying mist when the surrounding humidity reaches the set value. This button lets you set the timer for the humidifier to shut down automatically after 1-12 hours. Each touch increases t…

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FCC ID: 2BKKX-K20SMA TB-RF-074-1.0 Appendix III EUT External Photographs Photo 1 Appearance of EUT Photo 2 Appearance of EUT FCC ID: 2BKKX-K20SMA TB-RF-074-1.0 Photo 3 Appearance of EUT Photo 4 Appearance of EUT FCC ID: 2BKKX-K20SMA TB-RF-074-1.0 Photo 5 Appearance of EUT Photo 6 Appearance of EUT FCC ID: 2BKKX-K20SMA TB-RF-074-1.0 Photo 7 Appearance of EUT Photo 8 Appearance of EUT FCC ID: 2BKKX-K20SMA TB-RF-074-1.0 Photo 9 Appearance of EUT Photo 10 Appearance of EUT FCC ID: 2BKKX-K20SMA TB-RF-074-1.0 Photo 11 Appearance of EUT Photo 12 Appearance of EUT FCC ID: 2BKKX-K20SMA TB-RF-074-1.0 Photo 13 Appearance of EUT Photo 14 Appearance of EUT FCC ID: 2BKKX-K20SMA TB-RF-074-1.0 Photo 15 Appearance of EUT

FCC ID: 2BKKX-K20SMA TB-RF-074-1.0 Appendix IID Label Ultrasonic Humidifier FCC ID: 2BKKX-K20SMA Model: ALK-KH-K20SMA This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: 1. This device may not cause harmful interference. 2. This device must accept any interference received, including interference that may cause undesired operation. FCC ID: 2BKKX-K20SMA TB-RF-074-1.0 Appendix II ID Label Location

FCC ID: 2BKKX-K20SMA TB-RF-074-1.0 Appendix IV EUT Internal Photographs Photo 16 Internal of EUT Photo 17 Internal of EUT FCC ID: 2BKKX-K20SMA TB-RF-074-1.0 Photo 18 Appearance of PCB Photo 19 Appearance of PCB FCC ID: 2BKKX-K20SMA TB-RF-074-1.0 Photo 20 Appearance of PCB Photo 21 Appearance of PCB FCC ID: 2BKKX-K20SMA TB-RF-074-1.0 Photo 22 Appearance of PCB BLE/2.4GWi-Fi Antenna

Shenzhen Toby Technology Co., Ltd. Report No.: TBR-C-202408-0183-1 Page: 1 of 4 TB-RF-073-3.0 1/F., Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China Tel: +86 75526509301 Fax: +86 75526509195 Maximum Permissible Exposure Evaluation FCC ID: 2BKKX-K20SMA 1. Client Information Applicant : shenzhenshijinxinfeikejiyouxiangongsi Address : 2112D, Shatoujiao Construction Building, No. 112 Shashen Road, Tianxin Community, Shatoujiao Street, Yantian District, Shenzhen, Guangdong Province, China Manufacturer : shenzhenshijinxinfeikejiyouxiangongsi Address : 2112D, Shatoujiao Construction Building, No. 112 Shashen Road, Tianxin Community, Shatoujiao Street, Yantian District, Shenzhen, Guangdong Province, China 2. General Description of EUT EUT Name : Ultrasonic Humidifier Models No. : ALK-KH-K20SMA Model Difference : ---- Sample ID : HC-C-202408-0183-01-02# Product Description : Operation Frequency: Bluetooth 5.0(BLE): 2402MHz~2480MHz 802.11b/g/n(HT20): 2412MHz~2462MHz Power Rating : Input: AC 100-220V~ 50/60Hz Software Version : ---- Hardware Version : ---- Connecting I/O Port(S) : Please refer to the User's Manual Report No.: TBR-C-202408-0183-1 Page: 2 of 4 TB-RF-074-1.0 MPE Calculations 1. Antenna Gain: Antenna Brand Model Name Type Antenna Gain(dBi) Bluetooth LE N/A N/A PCB 2.54 Antenna Brand Model Name Type Antenna Gain(dBi) 2.4G Wi-Fi N/A N/A PCB 2.54 2. EUT Operation Condition: Software provided by client enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. 3. Exposure Evaluation: Equation from page 18 of OET Bulletin 65, Edition 97-01 S=(PG)/4πR 2 Where S: power density P: power input to the antenna G: power gain of the antenna in the direction of interest relative to an isotropic radiator. R: distance to the center of radiation of the antenna 4. Simultaneous transmission MPE Considerations According to KDB447498: All transmitters and antennas in the host must be either evaluated for MPE compliance, by measurement or computational modeling, or qualify for the standalone MPE test exclusion in section 7.1. Simultaneous transmission MPE test exclusion applies when the sum of the MPE ratios for all simultaneous transmitting antennas incorporated in a host device, based on the calculated/estimated, numerically modeled or measured field strengths or power density, is ≤ 1.0. This means that: ∑ of MPE ratios ≤ 1.0 Report No.: TBR-C-202408-0183-1 Page: 3 of 4 TB-RF-074-1.0 5. Test Result: Bluetooth LE Worst Maximum MPE Result Mode N TX Freq. (MHz) Conducted Power(max) (dBm) Turn-up Power (dB) Max tune up power (dBm) [P] ANT Gain (dBi) [G] Distance (cm) [R] Power Density (mW/cm 2 ) [S] GFSK (1Mbps) 1 2402 0.067 0±1 1 2.54 20 0.0004 2440 0.541 1±1 2 2.54 20 0.0006 2480 1.338 1±1 2 2.54 20 0.0006 Note: N TX = Number of Transmit Antennas RF Output power specifies that Maximum Conducted Peak Output Power. 2.4G Wi-Fi Worst Maximum MPE Result Mode N TX Freq. (MHz) Conducted Power(max) (dBm) Turn-up Power (dB) Max tune up power (dBm) [P] ANT Gain (dBi) [G] Distance (cm) [R] Power Density (mW/cm 2 ) [S] 802.11b 1 2412 14.39 14±1 15 2.54 20 0.0113 2437 14.84 15±1 16 2.54 20 0.0142 2462 14.82 15±1 16 2.54 20 0.0142 802.11g 1 2412 14.2 14±1 15 2.54 20 0.0113 2437 14.51 15±1 16 2.54 20 0.0142 2462 14.67 15±1 16 2.54 20 0.0142 802.11n (HT20) 1 2412 14.29 14±1 15 2.54 20 0.0113 2437 14.54 15±1 16 2.54 20 0.0142 2462 14.64 15±1 16 2.54 20 0.0142 Note: N TX = Number of Transmit Antennas RF Output power specifies that Maximum Conducted Peak Output Power. Remark: 1. Output power including turn-up tolerance; 2. Output power was adjust to duty cycle at 100% if measured duty cycle less than 98%; 3. MPE evaluate distance is 20cm from user manual provide by manufacturer. 4. Only the worst power was evaluated for each wireless function Report No.: TBR-C-202408-0183-1 Page: 4 of 4 TB-RF-074-1.0 6. Conclusion: As specified in Table 1B of 47 CFR 1.1310- Limits for Maximum Permissible Exposure (MPE), Limits for General Population/ Uncontrolled Exposure Frequency Range (MHz) Power density (mW/ cm 2 ) 300-1,500 F/1500 1,500-100,000 1.0 For Bluetooth LE: 2402~2480MHz & 2.4G WIFI: 2412~2462MHz MPE limit S: 1mW/ cm2 The worst MPE is calculated as 0.0142mW/cm2 < limit 1mW/cm2. So, RF exposure limit warning or SAR test are not required. The EUT will only be used with a separation of 20cm or greater between the antenna and nearby persons and can therefore be considered a mobile transmitter per 47 CFR2.1091 (b). The RF Exposure Information page from the manual is included here for reference. For a more detailed features description, please refer to the RF Test Report. The measurement results comply with the FCC Limit per 47 CFR 2.1091 for the uncontrolled RF Exposure of mobile device. -----END OF THE REPORT-----

Page 1 SHANGHAI DEMAN INFORMATION TECHNOLOGY CO.,LTD. MANUFACTURER: TUYA PRODUCT NAME:WBR3 ANTENNA ANTENNA TYPE:PCB WRITED: Long Wang DATE:20190520 VERSIONS:A Page 2 Measurement data Frequency (MHz) 240024502500 Return Loss-8.73-11.76-11.21 VSWR 2.161.711.77 Page 3 Antenna Size Test SetupAntenna Size Page 4 Directivity Diagram 2D YZ XY XZ Page 5 Radiation pattern 3D Page 6 Freq.（MHz）Effi(%)Gain (dBi) 2400 52.29 1.62 2410 52.17 1.71 2420 53.14 1.93 2430 54.16 1.98 2440 57.62 2.00 2450 59.64 2.17 2460 61.55 2.45 2470 60.64 2.38 2480 62.86 2.54 2490 59.85 2.30 2500 60.41 2.49 Efficiency&Gain

Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202408-0183-2 Page: 1 of 27 FCC ID:2BKKX-K20SMA TB-RF-074-1.0 RF Test Data for Bluetooth LE (Conducted Measurements) General Description of EUT Product Name: Ultrasonic Humidifier Test Model: ALK-KH-K20SMA Sample ID: HC-C-202408-0183-01-02# Environmental Conditions Temperature: 22.0°C-25°C Relative Humidity: 43%-55% Test Voltage: AC 120V Test Engineer: ZKN Zhou Note: For a more detailed features description, please refer to the report TBR-C-202408-0183-2 The report only show the worst case data. Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202408-0183-2 Page: 2 of 27 FCC ID:2BKKX-K20SMA TB-RF-074-1.0 Contents 1. Duty Cycle ........................................................................................................................................................................................... 3 2. Maximum Conducted Output Power ................................................................................................................................................. 6 3. -6dB Bandwidth .................................................................................................................................................................................. 9 4. Occupied Channel Bandwidth ......................................................................................................................................................... 12 5. Maximum Power Spectral Density Level ......................................................................................................................................... 15 6. Band Edge ........................................................................................................................................................................................ 18 7. Conducted RF Spurious Emission .................................................................................................................................................. 21 8. Restrict Band .................................................................................................................................................................................... 25 Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202408-0183-2 Page: 3 of 27 FCC ID:2BKKX-K20SMA TB-RF-074-1.0 1. Duty Cycle Condition Mode Frequency (MHz) Antenna Duty Cycle (%) Correction Factor (dB) 1/T (kHz) NVNT BLE 1Mbps 2402 Ant1 63.49 1.97 2.5 NVNT BLE 1Mbps 2440 Ant1 62.9 2.01 2.56 NVNT BLE 1Mbps 2480 Ant1 63.49 1.97 2.5 Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202408-0183-2 Page: 4 of 27 FCC ID:2BKKX-K20SMA TB-RF-074-1.0 Test Graphs Duty Cycle NVNT BLE 1Mbps 2402MHz Ant1 Duty Cycle NVNT BLE 1Mbps 2440MHz Ant1 Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202408-0183-2 Page: 5 of 27 FCC ID:2BKKX-K20SMA TB-RF-074-1.0 Duty Cycle NVNT BLE 1Mbps 2480MHz Ant1 Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202408-0183-2 Page: 6 of 27 FCC ID:2BKKX-K20SMA TB-RF-074-1.0 2. Maximum Conducted Output Power Condition Mode Frequency (MHz) Antenna Conducted Power (dBm) Limit (dBm) Verdict NVNT BLE 1Mbps 2402 Ant1 0.067 30 Pass NVNT BLE 1Mbps 2440 Ant1 0.541 30 Pass NVNT BLE 1Mbps 2480 Ant1 1.338 30 Pass Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202408-0183-2 Page: 7 of 27 FCC ID:2BKKX-K20SMA TB-RF-074-1.0 Test Graphs Power NVNT BLE 1Mbps 2402MHz Ant1 Power NVNT BLE 1Mbps 2440MHz Ant1 Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202408-0183-2 Page: 8 of 27 FCC ID:2BKKX-K20SMA TB-RF-074-1.0 Power NVNT BLE 1Mbps 2480MHz Ant1 Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202408-0183-2 Page: 9 of 27 FCC ID:2BKKX-K20SMA TB-RF-074-1.0 3. -6dB Bandwidth Condition Mode Frequency (MHz) Antenna -6 dB Bandwidth (MHz) Limit -6 dB Bandwidth (MHz) Verdict NVNT BLE 1Mbps 2402 Ant1 0.66 0.5 Pass NVNT BLE 1Mbps 2440 Ant1 0.65 0.5 Pass NVNT BLE 1Mbps 2480 Ant1 0.66 0.5 Pass Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202408-0183-2 Page: 10 of 27 FCC ID:2BKKX-K20SMA TB-RF-074-1.0 Test Graphs -6dB Bandwidth NVNT BLE 1Mbps 2402MHz Ant1 -6dB Bandwidth NVNT BLE 1Mbps 2440MHz Ant1 Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202408-0183-2 Page: 11 of 27 FCC ID:2BKKX-K20SMA TB-RF-074-1.0 -6dB Bandwidth NVNT BLE 1Mbps 2480MHz Ant1 Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.…

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Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202408-0183-21 Page: 1 of 51 FCC ID: 2BKKX-K20SMA TB-RF-074-1.0 RF Test Data for 2.4G WiFi (Conducted Measurements) General Description of EUT Product Name: Ultrasonic Humidifier Test Model: ALK-KH-K20SMA Sample ID: HC-C-202408-0183-01-02# Environmental Conditions Temperature: 22.0°C-25°C Relative Humidity: 43%-55% Test Voltage: AC 120V Test Engineer: ZKN Zhou Note: For a more detailed features description, please refer to the report TBR-C-202408-0183-21 The report only show the worst case data. Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202408-0183-21 Page: 2 of 51 FCC ID: 2BKKX-K20SMA TB-RF-074-1.0 Contents 1. Duty Cycle ........................................................................................................................................................................................... 3 2. Maximum Conducted Output Power ................................................................................................................................................. 9 3. -6dB Bandwidth ................................................................................................................................................................................ 10 4. Occupied Channel Bandwidth ......................................................................................................................................................... 16 5. Maximum Power Spectral Density Level ......................................................................................................................................... 22 6. Band Edge ........................................................................................................................................................................................ 28 7. Conducted RF Spurious Emission .................................................................................................................................................. 35 8. Restrict Band .................................................................................................................................................................................... 45 Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202408-0183-21 Page: 3 of 51 FCC ID: 2BKKX-K20SMA TB-RF-074-1.0 1. Duty Cycle Condition Mode Frequency (MHz) Antenna Duty Cycle (%) Correction Factor (dB) 1/T (kHz) NVNT b 2412 Ant1 98.96 0.05 0.08 NVNT b 2437 Ant1 98.96 0.05 0.08 NVNT b 2462 Ant1 99.04 0.04 0.08 NVNT g 2412 Ant1 94.09 0.26 0.48 NVNT g 2437 Ant1 94.09 0.26 0.48 NVNT g 2462 Ant1 94.06 0.27 0.49 NVNT n(HT20) 2412 Ant1 93.66 0.28 0.52 NVNT n(HT20) 2437 Ant1 93.66 0.28 0.52 NVNT n(HT20) 2462 Ant1 93.66 0.28 0.52 Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202408-0183-21 Page: 4 of 51 FCC ID: 2BKKX-K20SMA TB-RF-074-1.0 Test Graphs Duty Cycle NVNT b 2412MHz Ant1 Duty Cycle NVNT b 2437MHz Ant1 Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202408-0183-21 Page: 5 of 51 FCC ID: 2BKKX-K20SMA TB-RF-074-1.0 Duty Cycle NVNT b 2462MHz Ant1 Duty Cycle NVNT g 2412MHz Ant1 Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202408-0183-21 Page: 6 of 51 FCC ID: 2BKKX-K20SMA TB-RF-074-1.0 Duty Cycle NVNT g 2437MHz Ant1 Duty Cycle NVNT g 2462MHz Ant1 Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202408-0183-21 Page: 7 of 51 FCC ID: 2BKKX-K20SMA TB-RF-074-1.0 Duty Cycle NVNT n(HT20) 2412MHz Ant1 Duty Cycle NVNT n(HT20) 2437MHz Ant1 Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202408-0183-21 Page: 8 of 51 FCC ID: 2BKKX-K20SMA TB-RF-074-1.0 Duty Cycle NVNT n(HT20) 2462MHz Ant1 Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202408-0183-21 Page: 9 of 51 FCC ID: 2BKKX-K20SMA TB-RF-074-1.0 2. Maximum Conducted Output Power Condition Mode Frequency (MHz) Antenna Conducted Power (dBm) Limit (dBm) Verdict NVNT b 2412 Ant1 14.39 30 Pass NVNT b 2437 Ant1 14.84 30 Pass NVNT b 2462 Ant1 14.82 30 Pass NVNT g 2412 Ant1 14.2 30 Pass NVNT g 2437 Ant1 14.51 30 Pass NVNT g 2462 Ant1 14.67 30 Pass NVNT n(HT20) 2412 Ant1 14.29 30 Pass NVNT n(HT20) 2437 Ant1 14.54 30 Pass NVNT n(HT20) 2462 Ant1 14.64 30 Pass Note: The duty factor has been compensated into the result. Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202408-0183-21 Page: 10 of 51 FCC ID: 2BKKX-K20SMA TB-RF-074-1.0 3. -6dB Bandwidth Condition Mode Frequency (MHz) Antenna -6 dB Bandwidth (MHz) Limit -6 dB Bandwidth (MHz) Verdict NVNT b 2412 Ant1 9.05 0.5 Pass NVNT b 2437 Ant1 8.58 0.5 Pass NVNT b 2462 Ant1 8.02 0.5 Pass NVNT g 2412 Ant1 16.33 0.5 Pass NVNT g 2437 Ant1 16.33 0.5 Pass NVNT g 2462 Ant1 …

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Shenzhen Toby Technology Co., Ltd. Report No.: TBR-C-202408-0183-2 Page: 1 of 38 TB-RF-074-1.0 1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China Tel: +86 75526509301 Fax: +86 75526509195 Radio Test Report FCC ID: 2BKKX-K20SMA Report No. : TBR-C-202408-0183-2 Applicant : shenzhenshijinxinfeikejiyouxiangongsi Equipment Under Test (EUT) EUT Name : Ultrasonic Humidifier Model No. : ALK-KH-K20SMA Series Model No. : ---- Brand Name : AILINKE Sample ID : HC-C-202408-0183-01-01# & HC-C-202408-0183-01-02# Receipt Date : 2024-08-23 Test Date : 2024-08-23 to 2024-09-03 Issue Date : 2024-09-03 Standards : FCC Part 15 Subpart C 15.247 Test Method : ANSI C63.10: 2013 KDB 558074 D01 15.247 Meas Guidance v05r02 Conclusions : PASS In the configuration tested, the EUT complied with the standards specified above. Tested By : ZKN Zhou Reviewed By : Camille Li Approved By : Ivan Su This report details the results of the testing carried out on one sample. The results contained in this test report do not relate to other samples of the same product. The manufacturer should ensure that all products in series production are in conformity with the product sample detailed in the report. Report No.: TBR-C-202408-0183-2 Page: 2 of 38 TB-RF-074-1.0 Contents CONTENTS ............................................................................................................................................. 2 1. GENERAL INFORMATION ABOUT EUT.............................................................................. 5 1.1 Client Information ................................................................................................................. 5 1.2 General Description of EUT (Equipment Under Test) ................................................... 5 1.3 Block Diagram Showing the Configuration of System Tested ...................................... 6 1.4 Description of Support Units .............................................................................................. 7 1.6 Description of Test Software Setting ................................................................................ 8 1.7 Measurement Uncertainty .................................................................................................. 8 1.8 Test Facility ........................................................................................................................... 9 2. TEST SUMMARY ..................................................................................................................... 10 3. TEST SOFTWARE ................................................................................................................... 10 4. TEST EQUIPMENT AND TEST SITE ................................................................................... 11 5. CONDUCTED EMISSION ....................................................................................................... 13 5.1 Test Standard and Limit .................................................................................................... 13 5.2 Test Setup ........................................................................................................................... 13 5.3 Test Procedure ................................................................................................................... 13 5.4 Deviation From Test Standard ......................................................................................... 14 5.5 EUT Operating Mode ........................................................................................................ 14 5.6 Test Data ............................................................................................................................. 14 6. RADIATED AND CONDUCTED UNWANTED EMISSIONS ............................................ 15 6.1 Test Standard and Limit .................................................................................................... 15 6.2 Test Setup ........................................................................................................................... 16 6.3 Test Procedure ................................................................................................................... 17 6.4 Deviation From Test Standard ......................................................................................... 19 6.5 EUT Operating Mode ........................................................................................................ 19 6.6 Test Data ............................................................................................................................. 19 7. RESTRICTED BANDS REQUIREMENT ............................................................................. 20 7.1 Test Standard and Limit .................................................................................................... 20 7.2 Test Setup ..............................................................…

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