2BD5Z-KR0548-4CHRemote control switch

User Manual V1.1 This instruction manual applies to: KR05-1CH KR0548-1CH KR0548-2CH KR0548-4CH WiFi Smart Switch Wiring diagram 12345 67891011 Pairing with eWeLink APP Download APP 1 Connect your phone to 2.4GHz WiFi and turn on Bluetooth. Long press pairing button for more than 5 seconds until blus LED indicator blinks twice quickly and keeps on once to enter pairing mode. 2 3 4 Please check the following before using the device Your phone has been connected to a 2.4G WiFi. Your phone system version needs to be Android 5.0/iOS 10 or higher. Your phone must be able to access the APP store and download the APP. If your router has set Mac address filtering,please enter the router settings to turn off it. KR05-1CH WiFi module Input USB 5V Relay indicator light Open the key / Reset button Input Output WiFi network indicator light KR05-1CH Input USB 5V KR0548-1CH Input USB 5V WiFi module Open the key / Reset button Relay indicator light Relay normally open/normally closed output port 7V Power port NO COM NC WiFi network indicator light GND 7V-48V KR0548-1CH Input USB 5V KR0548-2CH Input USB 5V NO1 COM1 NC1 GND 7V-48V NO2 COM2 NC2 7V Power port Relay normally open/normally closed output port Open the key / Reset button WiFi network indicator light WiFi module Relay indicator light KR0548-2CH Input USB 5V KR0548-4CH NO1 COM1 NC1 GND 7V-48V NO2 COM2 NC2 Input USB 5V NO3 COM3 NC3 NO4 COM4 NC4 WiFi network indicator light Open the key / Reset button WiFi module Relay indicator light 7V Power port Relay normally open/normally closed output port KR0548-4CH Input USB 5V DC 7V-48V DC 7V-48V DC 7V-48V After searching for the device, click on the right to add it 6 Select the wifi connected to the phone, confirm the relevant information, and click Next 5 3 Open eWelink APP,tap add device in the top right corner of the screen. Compatible Pairing Mode If you fail to enter Quick Pairing Mode(Touch),please try “Compatible Pairing Mode” to pair. Long press Pairing button for 5s until the WiFi LED indicator changes in a cycle of two short flashes and release.Long press Pairing button for 5s again until the WiFi LED indicator flashes quickly.Then, the device enters Compatible Pairing Mode. Tap “+” and select “Compatible Pairing Mode” on APP.Select WiFi SSID with ITEAD-****** and enter thepassword 12345678,and thengo back to eWeLink APP and tap “Next”.Be patient until pairing completes. Pairing with RM2.4G remote control Open the added device and click the settings icon in the upper right corner. Follow the prompts for the next step.The LED indicator “flashes once again”means the pairing is successful. Note:If you need to delete the RM2.4G remote control,enter the added interface and delete it. Features This device is WiFi smart switch.Use your smart phone in Turn devices on or off in your home anywhere,set timer on/off,Share with your family to control and so on. FCC Warnning: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection againstharmful interference in a residential installation. This equipment generates, uses and can radiateradio frequency energy and, if not installed and used in accordance with the instructions, maycause harmful interference to radio communications. However, there is no guarantee thatinterference will not occur in a particular installation. If this equipment does cause harmfulinterference to radio or television reception, which can be determined by turning the equipmentoff and on, the user is encouraged to try to correct the interference by one or more of thefollowing measures: • Reorient or relocate the receiving antenna. • Increase the separation between the equipment and receiver. • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. • Consult the dealer or an experienced radio/TV technician for help. Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void your authority to operate this equipment. 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, and (2) this device must accept any interference received, including interference that may cause undesired operation. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator and your body.

Shenzhen Qiai Wireless Electronic Commerce Co., Ltd 205, Building 5, Hongguan Innovation Talent Industrial Park, Longzhu Community, Buji Street, Longgang District, Shenzhen, China Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2023/12/20 U.S. Agent Designation Shenzhen Qiai Wireless Electronic Commerce Co., Ltd acknowledges their consent for the following contact located in the United States to act as their agent for service of process for the equipment for which authorization is sought (FCC ID: 2BD5Z-KR0548-4CH): Name and company of U.S. agent: GSS SERVICE INC Physical U.S. address of agent: 6547 N Academy Blvd #2266 Colorado Springs COLORADO 80918 United States FRN of U.S. agent: 0033402082 Email address of U.S. agent: [email protected] GSS SERVICE INC acknowledges their obligation to accept service of process on behalf of Shenzhen Qiai Wireless Electronic Commerce Co., Ltd Shenzhen Qiai Wireless Electronic Commerce Co., Ltd with the FRN [0034631382] accepts its obligation to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. By signing this form, we confirm the above and that we are aware of the application requirements listed under § 2.911(d)(7). The information provided in this letter is based on the referenced rule parts of Title 47 of the CFR as well as KDB 986446 D01. An expiration date for this letter does not exist. In case the U.S. agent changes, the grantee is obligated to notify the FCC within 30 days via the granting TCB. Sincerely, Signature Wang Thomas Manager Shenzhen Qiai Wireless Electronic Commerce Co., Ltd Signature Michoux Logan PM GSS SERVICE INC 48_[mo del] US_Agent_2.911(d)(7) - U, V0 5

Sincerely, Name/Title： Wang Thomas/Manager Company: Shenzhen Qiai Wireless Electronic Commerce Co.,Ltd Address: 205, Building 5, Hongguan Innovation Talent Industrial Park, Longzhu Community, Buji Street,Longgang District, Shenzhen China Phone: 18300044258 Fax: N/A E-Mail: [email protected]

FCC ID: 2BD5Z-KR0548-4CH External Photos of the EUT Photo 1 Photo 2 Photo 3 FCC ID: 2BD5Z-KR0548-4CH Photo 4 Photo 5 Photo 6

Label and Location Size: L: 2.0cm*W: 1.0cm Label and Location FCC ID : 2BD5Z-KR0548-4CH

FCC ID: 2BD5Z-KR0548-4CH Internal Photos of the EUT Photo 1 Photo 2 Photo 3 FCC ID: 2BD5Z-KR0548-4CH Photo 4 Photo 5 Photo 6 2.4G WIFI PCB Antenna FCC ID: 2BD5Z-KR0548-4CH Photo 7

RF Exposure evaluation FCC ID: 2BD5Z-KR0548-4CH Exposure category: General population/uncontrolled environment EUT Type: Production Unit Device Type: Mobile Device 1. Reference According to §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. According to §1.1310 and §2.1091 RF exposure is calculated. KDB447498 D01: Mobile and Portable Devices RF Exposure Procedures and Equipment Authorization Policies 2. Limit Limits for Maximum Permissible Exposure (MPE)/Controlled Exposure Frequency Range(MHz) Electric Field Strength(V/m) Magnetic Field Strength(A/m) Power Density (mW/cm²) Averaging Time (minute) Limits for Occupational/Controlled Exposure 0.3 – 3.0 3.0 – 30 30 – 300 300 – 1500 1500 – 100,000 614 1842/f 61.4 / / 1.63 4.89/f 0.163 / / (100) * (900/f 2 )* 1.0 f/300 5 6 6 6 6 6 Limits for Maximum Permissible Exposure (MPE)/Uncontrolled Exposure Frequency Range(MHz) Electric Field Strength(V/m) Magnetic Field Strength(A/m) Power Density (mW/cm²) Averaging Time (minute) Limits for Occupational/Controlled Exposure 0.3 – 3.0 3.0 – 30 30 – 300 300 – 1500 1500 – 100,000 614 824/f 27.5 / / 1.63 2.19/f 0.073 / / (100) * (180/f 2 )* 0.2 f/1500 1.0 30 30 30 30 30 F=frequency in MHz *=Plane-wave equivalent power density 3. MPE Calculation Method Predication of MPE limit at a given distance Equation from page 18 of OET Bulletin 65, Edition 97-01 S=PG/4πR² Where: S=power density P=power input to 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. Antenna Information KR0548-4CH can only use antennas certificated as follows provided by manufacturer; Antenna No. Model No. of antenna: Type of antenna: Gain of the antenna (Max.) Frequency range: 2.4GWIFI / PCB antenna 0.68dBi for 2400-2500MHz 5. Manufacturing Tolerance WIFI(Peak) ANT1 Frequency (MHz) 11b 2412 2437 2462 Target (dBm) 13.0 13.0 12.0 Tolerance ± (dB) 1.0 1.0 1.0 Frequency (MHz) 11g 2412 2437 2462 Target (dBm) 13.0 13.0 12.0 Tolerance ± (dB) 1.0 1.0 1.0 Frequency (MHz) 11n(HT20) 2412 2437 2462 Target (dBm) 13.0 13.0 12.0 Tolerance ± (dB) 1.0 1.0 1.0 6. Standalone MPE Result As declared by the Applicant, the EUT is a wireless device used in a fix application, at least 20 cm from any body part of the user or nearby persons; from the maximum EUT RF output power, the minimum separation distance, r =20cm, as well as the gain of the used antenna is 0.68dBi, the RF power density can be obtained. Modulation Type Output power Antenna Gain (dBi) Antenna Gain (linear) MPE (mW/cm 2 ) MPE Limits (mW/cm 2 ) dBm mW 2.4GWIFI 14.0 25.1189 0.68 1.1695 0.0058 1.0000 Remark: 1. Output power (Peak) including turn-up tolerance; 2. MPE evaluate distance is 20cm from user manual provide by manufacturer. 7. Conclusion The measurement results comply with the FCC Limit per 47 CFR 2.1091 for the uncontrolled RF Exposure of mobile device. ----------------THE END OF REPORT---------------

1. Antenna Description: Antenna type PCB antenna Model KR0548-4CH Frequency range 2400-2500MHz Manufacturer Shenzhen Qiai Wireless Electronic Commerce Co., Ltd ANT Peak Gain 0.68 dBi 2. Antenna Photo: Length: 13.35mm Width: 3.00mm 3. Test Equipment & Conditions 3.1 Test instrument VSWR is tested using Agilent E5071B connected to a hand mechanism, and the status is free space. 3.2 Test environment and methods 4．Antenna Radiation Pattern 2400MHz 2450MHz 2500MHz

Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao‘an District, Shenzhen, China Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn FCC PART 15 SUBPART C TEST REPORT FCC PART 15.247 Report Reference No. ..................... : FCC ID............................................. : CTA23120800101 2BD5Z-KR0548-4CH Compiled by ( position+printed name+signature) . : File administrators Zoey Cao Supervised by ( position+printed name+signature) . : Project Engineer Amy Wen Approved by ( position+printed name+signature) . : RF Manager Eric Wang Date of issue .................................... : Dec. 15, 2023 Testing Laboratory Name .............. : Shenzhen CTA Testing Technology Co., Ltd. Address............................................ : Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Applicant’s name ............................ : Shenzhen Qiai Wireless Electronic Commerce Co., Ltd Address ............................................ : 205, Building 5, Hongguan Innovation Talent Industrial Park, Longzhu Community, Buji Street, Longgang District, Shenzhen, China Test specification ........................... : Standard ........................................... : FCC Part 15.247 TRF Originator .................................. : Shenzhen CTA Testing Technology Co., Ltd. Shenzhen CTA Testing Technology Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen CTA Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen CTA Testing Technology Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Test item description ..................... : Remote control switch Trade Mark ....................................... : N/A Manufacturer .................................... : Shenzhen Qiai Wireless Electronic Commerce Co., Ltd Model/Type reference ...................... : KR0548-4CH Listed Models .................................. : KR0548-2CH, KR0548-3CH, KR0548-1CH, KR05-1CH, KR05-2CH, KR05-3CH, KR05-4CH, KR0548-6CH, KR0548-8CH, KR0548-10CH, KR0548-12CH, KR0548-16CH, ZBGW, ZBGW01, ZBGW02 Modulation Type ............................... : CCK/DSSS/OFDM Operation Frequency ........................ : From 2412 - 2462MHz Rating ............................................... : DC 5.0V-48.0V From external circuit Result ............................................... : PASS Report No.: CTA23120800101 Page 2 of 40 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn T E S T R E P O R T Equipment under Test : Remote control switch Model /Type : KR0548-4CH Listed Models : KR0548-2CH, KR0548-3CH, KR0548-1CH, KR05-1CH, KR05-2CH, KR05-3CH, KR05-4CH, KR0548-6CH, KR0548-8CH, KR0548-10CH, KR0548-12CH, KR0548-16CH, ZBGW, ZBGW01, ZBGW02 Applicant : Shenzhen Qiai Wireless Electronic Commerce Co., Ltd Address : 205, Building 5, Hongguan Innovation Talent Industrial Park, Longzhu Community, Buji Street, Longgang District, Shenzhen, China Manufacturer : Shenzhen Qiai Wireless Electronic Commerce Co., Ltd Address : 205, Building 5, Hongguan Innovation Talent Industrial Park, Longzhu Community, Buji Street, Longgang District, Shenzhen, China Test Result: PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: CTA23120800101 Page 3 of 40 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn Contents 1 T E S T S T A N D A R D S ................................................................. 4 2 S U M M A R Y ............................................................................ 5 2.1 General Remarks 5 2.2 Product Description 5 2.3 Equipment Under Test 5 2.4 Short description of the Equipment under Test (EUT) 5 2.5 EUT operation mode 6 2.6 Block Diagram of Test Setup 6 2.7 Related Submittal(s) / Grant (s) 6 2.8 Modifications 6 3 T E S T E N V I R O N M E N T .............................................................. 7 3.1 Address of the test laboratory 7 3.2 Test Facility 7 3.3 Environmental conditions 7 3.4 Test Description 8 3.5 Statement of the measurement uncertainty 8 3.6 Equipments Used during the Test 9 4 T E S T C O N D I T I O N S A N D R E S U L T S ........................................... 11 4.1 AC Power Conducted Emission 11 4.2 Radiated Emission 14 4.3 Maximum Peak Conducted Output Power 20 4.4 Power Spectral Density 21 4.5 6dB Bandwidth 24 4.6 Out-of-band Emissions 27 4.7 Antenna Requirement 34 5 T E S T S E T U P P H O T O S O F T H E E U T ......................................... 35 6 P H O T O S O F T H E E U T ........................................................... 36 Report No.: CTA23120800101 Page 4 of 40 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn 1 T E S T S T A N D A R D S The tests were performed according to following standards: FCC Rules Part 15.247: Frequency Hopping, Direct Spread Spectrum and Hybrid Systems that are in operation within the bands of 902-928 MHz,…

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Report No.: CTA23120800101 Page 30 of 40 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn 802.11g Reference Reference CH06 CH11 30MHz-3GHz 30MHz-3GHz 3GHz -25GHz 3GHz -25GHz Report No.: CTA23120800101 Page 31 of 40 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn 802.11n20 Reference Reference CH01 CH06 30MHz-3GHz 30MHz-3GHz 3GHz -25GHz 3GHz -25GHz Report No.: CTA23120800101 Page 32 of 40 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn 802.11n20 Reference CH11 30MHz-3GHz 3GHz -25GHz Report No.: CTA23120800101 Page 33 of 40 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn Band-edge Measurements for RF Conducted Emissions: 802.11b Left bandedge Right bandedge 802.11g Left bandedge Right bandedge 802.11n(HT20) Left bandedge Right bandedge Report No.: CTA23120800101 Page 34 of 40 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn 4.7 Antenna Requirement Standard Applicable For intentional device, according to FCC 47 CFR Section 15.203: An intentional radiator shall be designed to ensure that no antenna other than that furnished by the responsible party shall be used with the device. The use of a permanently attached antenna or of an antenna that uses a unique coupling to the intentional radiator, the manufacturer may design the unit so that a broken antenna can be replaced by the user, but the use of a standard antenna jack or electrical connector is prohibited FCC CFR Title 47 Part 15 Subpart C Section 15.247(c) (1) (I): (i) Systems operating in the 2400-2483.5 MHz band that is used exclusively for fixed. Point-to-point operations may employ transmitting antennas with directional gain greater than 6dBi provided the maximum conducted output power of the intentional radiator is reduced by 1 dB for every 3 dB that the directional gain of the antenna exceeds 6dBi. Test Result: The maximum gain of antenna was 0.68 dBi. Remark:The antenna gain is provided by the customer , if the data provided by the customer is not accurate, Shenzhen CTA Testing Technology Co., Ltd. does not assume any responsibility. Report No.: CTA23120800101 Page 35 of 40 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn 5 T e s t S e t u p P h o t o s o f t h e E U T Report No.: CTA23120800101 Page 36 of 40 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn 6 P h o t o s o f t h e E U T Report No.: CTA23120800101 Page 37 of 40 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn Report No.: CTA23120800101 Page 38 of 40 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn Report No.: CTA23120800101 Page 39 of 40 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn Report No.: CTA23120800101 Page 40 of 40 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn ********************** End of Report **********************

FCC ID: 2BD5Z-KR0548-4CH Test Setup Photos of the EUT