2AMV5-SK509W2SNIndependently controlled 2-Outlet Outdoor WiFi Smart Socket

User Manual SK509-W-2S-N is a wifi Wireless’s socket , It is powered by 125Vac，the hardware include one keyswitch, one wifi chip（BK7231) ,two outputs and two blue LEDs.Its working principle is divided into:The Smart Phone control socket through the internet or 4G net. BK7231 responsible for the function keyswitch signals are transmitted to a control part.Control part based on the keyswitch information,control LED and RELAY output ON or OFF. The shell side of the appliance has one button and two indicators. There are two types of keystrokes: tap and long. ·Tap the switch to control the socket, the light is on when on, and off when off； ·Press and hold into the EZ distribution status, the light flashes, at this time can be in accordance with the EZ configuration method for the distribution of the network; ·Press and hold again when flashing, will enter the AP distribution status, the indicator flashes slowly, at this time according to the AP configuration method for the distribution. Note:The SK509-W-2S-N has a power-down memory function thatwill be noted by the device as long as it remains ON or OFFfor5 secondsand will return to this state after the nextpower-up. 1 、 CPU BK7231 is a 2.4 GHz 802.11n chip with multi-media feature. It integrates hardware and software component to finish a complete 802.11b/g/n application, which supports AP and STA role simultaneously. It is able to support multiple cloud links. •Programmable RAM/ROM interfaces (iBus), which can be connected with memory controller, and can also be used to visit flash. •Data RAM interface (dBus), which can connect with memory controller. •AHB interface which can be used to visit theregister. •External 26MHz OSC provide a basic clock speed, Then the clock speed is increased to 80MHz through the internal PLL circuit 2,Memory BK7231 Wi-Fi SoC integrates memory controller and memory units including SRAM and ROM. MCU can access the memory units through iBus, dBus, and AHB interfaces. All memory units can be accessed upon request, while a memory arbiter will decide the running sequence according to the time when these requests are received by the processor. According to our current version of SDK, SRAM space available to users is assigned as below. •RAM size < 50 kB, that is, when BK7231 is working under the Station mode and connects to the router, programmable space accessible in heap + data section is around 50 kB. •There is no programmable ROM in the SoC, therefore, user program must be stored in an external SPI flash. BK7231 uses external SPI flash to store user programs, and supports up to 16 MB memory capacity theoretically. The high frequency clock on BK7231 is used to drive both transmit and receive mixers. This clock is generated from internal crystal oscillator and external crystal. The internal calibration inside the crystal oscillator ensures that a wide range of crystals can be used, nevertheless the quality of the crystal is still a factor to consider to have reasonable phase noise and good Wi-Fi sensitivity. 3,Power Management BK7231 is designed with advanced power management technologies and intended for mobile devices, wearable electronics and the Internet of Things applications. Model：SK509-W-2S-N The low-power architecture operates in 3 modes: active mode, sleep mode and Deep sleep mode. BK7231 consumes about 7 μA of power in Deep-sleep mode (with RTC clock still running) and less than 1.0 mA (DTIM=3) or less than 0.6 mA (DTIM=10) to stay connected to the access point. 2.4 GHz Transceiver The 2.4 GHz receiver down-converts the RF signals to quadrature baseband signals and converts them to the digital domain with 2 high resolution high speed ADCs. To adapt to varying signal channel conditions, RF filters, automatic gain control (AGC), DC offset cancelation circuits and baseband filters are integrated within BK7231. The 2.4 GHz transmitter up-converts the quadrature baseband signals to 2.4 GHz, and drives the antenna with a high-power CMOS power amplifier. The function of digital calibration further improves the linearity of the power amplifier, Additional calibrations are integrated to offset any imperfections of the radio, such as: • Carrier leakage • I/Q phase matching • Baseband nonlinearities •Parameters 1. Operation Temperature: -40°Cto 105°C 2. PCB Material & Size:FR4, 52.2mm x 45mm x 1.2mm 3. RF Modulation: 802.11b,1Mbps (CCK) 802.11g,802.11n20 (OFDM); 4. RF Frequency Range: 2412MHz to 2462MHz; FCC STATEMENT : 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. Warning:Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. NOTE: 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 against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following 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. RF warning statement: This e…

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FCC ID: 2AMV5-SK509W2SN

Label Location On EUT Label Product Name: Independently controlled 2-Outlet Outdoor WiFi Smart Socket Model No.: SK509-W-2S-N FCC ID: 2AMV5-SK509W2SN 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.

FCC ID: 2AMV5-SK509W2SN ANT

version01 Changxing Potek Electronics & Technology Co., Ltd. Declaration concerning Antenna Specification It is hereby declared that the product Model No.: SK509-W-2S-N FCC ID : 2AMV5-SK509W2SN fulfills the requirement in FCC test relating to the antenna type. The device specified above confirms to the FCC recommendations for internal antenna type(s) described below: Model No. of antenna: N/A Type of antenna:PCB Antenna Gain of the antenna: 3 dBi Frequency range:2412-2462MHz The mounting of the antenna is fixed to the radio module and no other antenna should be used. Company name: Changxing Potek Electronics & Technology Co., Ltd. Address: No. 1218, Taihu Avenue, Taihu Subdistrict, Changxing County, Huzhou City, Zhejiang, P.R.C. City:Huzhou City ZIP / Postal code: N/A Country:China Place:ChinaDate: 2020-07-28 Signature:

RF EXPOSURE EVALUATION According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency(RF) Radiation as specified in §1.1307(b) FCC ID: 2AMV5-SK509W2SN EUT Specification EUTIndependently controlled 2-Outlet Outdoor WiFi Smart Socket Frequency band (Operating) WLAN: 2.412GHz ~ 2.462GHz WLAN: 5.18GHz ~ 5.24GHz WLAN: 5.745GHz ~ 5.825GHz Others: 2.402GHz~2.480GHz Device category Portable (<20cm separation) Mobile (>20cm separation) Others ___ Exposure classificationOccupational/Controlled exposure (S = 5mW/cm2) General Population/Uncontrolled exposure (S=1mW/cm2) Antenna diversitySingle antenna Multiple antennas Tx diversity Rx diversity Tx/Rx diversity Max. output power21.43dBm (0.1390W) Antenna gain (Max)3dBi Evaluation applied MPE Evaluation SAR Evaluation Limits for Maximum Permissible Exposure(MPE) Frequency Range(MHz) Electric Field Strength(V/m) Magnetic Field Strength(A/m) Power Density(mW/cm 2 ) Average Time (A) Limits for Occupational/Control Exposures 300-1500----F/3006 1500-100000----56 (B) Limits for General Population/Uncontrol Exposures 300-1500----F/15006 1500-100000----130 Friis transmission formula: Pd=(Pout*G)\(4*pi*R2) Where Pd= Power density in mW/cm 2 Pout=output power to antenna in Mw G= gain of antenna in linear scale Pi=3.1416 R= distance between observation point and center of the radiator in cm Pd the limit of MPE, 1mW/cm2. If we know the maximum gain of the antenna and total power input to the antenna, through the calculation, we will know the distance where the MPE limit is reached. Measurement Result 2.4GHz WiFi: Operating Mode Channel Frequency Measured Power Tune up tolerance Max. Tune up Power Antenna Gain Power density at 20cm Power density Limits (mW/cm 2 ) (MHz)(dBm)(dBm)(dBm)(dBi)(mW/ cm 2 ) 802.11b 241218.84 18.84±119.8430.03831 243718.39 18.39±119.3930.03451 246217.31 17.31±118.3130.02691 802.11g 241219.56 19.56±120.5630.04521 243721.43 21.43±122.4330.06951 246220.68 20.68±121.6830.05841 802.11n (HT20) 241219.79 19.79±120.793 0.0476 1 243720.00 20.00±121.0030.05001 246219.23 19.23±120.2330.04191

Report No.: 18220WC00091301FCC ID: 2AMV5-SK509W2SNPage 1 of 59 Code:AB-RF-05-a FCC TEST REPORT Client Name: Changxing Potek Electronics & Technology Co., Ltd. Address: No. 1218, Taihu Avenue, Taihu Subdistrict, Changxing County, Huzhou City, Zhejiang, P.R.C. Product Name: Independently controlled 2-Outlet Outdoor WiFi Smart Socket Date: Jul. 28, 2020 Shenzhen Anbotek Compliance Laboratory Limited Report No.: 18220WC00091301FCC ID: 2AMV5-SK509W2SNPage 2 of 59 Code:AB-RF-05-a Contents 1. General Information ............................................................................................................................................... 5 1.1. Client Information ....................................................................................................................................... 5 1.2. Description of Device (EUT) ..................................................................................................................... 5 1.3. Auxiliary Equipment Used During Test ................................................................................................... 5 1.4. Description of Test Modes ........................................................................................................................ 6 1.5. List of channels ........................................................................................................................................... 7 1.6. Description Of Test Setup ......................................................................................................................... 8 1.7. Test Equipment List .................................................................................................................................... 9 1.8. Measurement Uncertainty ....................................................................................................................... 10 1.9. Description of Test Facility ...................................................................................................................... 10 2. Summary of Test Results ................................................................................................................................... 11 3. Conducted Emission Test ................................................................................................................................... 12 3.1. Test Standard and Limit .......................................................................................................................... 12 3.2. Test Setup .................................................................................................................................................. 12 3.3. Test Procedure .......................................................................................................................................... 12 3.4. Test Data .................................................................................................................................................... 12 4. Radiation Spurious Emission and Band Edge ................................................................................................ 15 4.1. Test Standard and Limit .......................................................................................................................... 15 4.2. Test Setup .................................................................................................................................................. 15 4.3. Test Procedure .......................................................................................................................................... 16 4.4. Test Data .................................................................................................................................................... 17 5. Maximum Output Power Test ............................................................................................................................ 26 5.1. Test Standard and Limit .......................................................................................................................... 26 5.2. Test Setup .................................................................................................................................................. 26 5.3. Test Procedure .......................................................................................................................................... 26 5.4. Test Data .................................................................................................................................................... 26 6. 6DB Occupy Bandwidth Test ............................................................................................................................. 30 6.1. Test Standard and Limit .......................................................................................................................... 30 6.2. Test Setup ............................................................................................................................... ................... 30 6.3. Test Procedure .......................................................................................................................................... 30 6.4. Test Data .................................................................................................................................................... 30 7. Power Spectral Density Test .............................................................................................................................. 37 7.1. Test Standard and Limit .......................................................................................................................... 37 7.2. Test Setup .................................................................................................................................................. 37 7.3. Test Procedure ........................................................…

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FCC ID: 2AMV5-SK509W2SN Photo of Conducted Emission Measurement Photo of Radiation Emission Test