2AMV5-SK539-WThe 1-outlet Wi-Fi smart socket

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ny Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the 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. 127( 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. FCC Radiation Exposure Statement: 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& your body. ISED RSS Warning: This device complies with Innovation, Science and Economic Development Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. Le présent appareil est conforme aux CNR d'ISED applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes: (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement. ISED RF exposure statement: This equipment complies with ISED radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator& your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. Le rayonnement de la classe b repecte ISED fixaient un environnement non contrôlés.Installation et mise en œuvre de ce matériel devrait avec échangeur distance minimale entre 20 cm ton corps.Lanceurs ou ne peuvent pas coexister cette antenne ou capteurs avec d’autres.

Date: 2020-05-08 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Attestation Letter To Whom It May Concern, The chip BK7231T installed in our product The 1-outlet wifi smart socket (model name: SK539-W , SK517-W, FCC ID: 2AMV5-SK539-W ), which are supports 2.4G WiFi 802.11b/802.11g/802.11n-HT20/802.11n-HT40 and BLE functions. But for the product, it only activates 2.4G WiFi 802.11b/802.11g/802.11n-HT20 function, the other functions are disabled by using the software. Please contact me if there is n eed f or a ny additional clarification or i nformation. Best Regards, Company: Changxing Potek Electronics & Technology Co., Ltd. Add: No. 1218, Taihu Avenue, Taihu Subdistrict, Changxing County, Huzhou City, Zhejiang, P.R.C. 3 1319 Tel: 0572-608660 0 Fax: 0572-6086669 E-mail: Fiona@cn-envirotech. Signature: Typed or Printed Name: FIONA WEN Title: SALES V.P.

Company: Changxing Potek Electronics & Technology Co., Ltd. Add: No. 1218, Taihu Avenue, Taihu Subdistrict, Changxing County, Huzhou City, Zhejiang, P.R.C. 31319 Tel: 0572-6086600 Fax: 0572-6086669 E-mail: [email protected] '(&/$5$7,21 'HDU6LURU0DGDP :HChangxing Potek Electronics & Technology Co., Ltd.KHUHE\GHFODUH WKDWSURGXFWQDPH The 1-outlet wifi smart socket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

Company: Changxing Potek Electronics & Technology Co., Ltd. Add: No. 1218, Taihu Avenue, Taihu Subdistrict, Changxing County, Huzhou City, Zhejiang, P.R.C. 31319 Tel: 0572-6086600 Fax: 0572-6086669 E-mail: Fiona@cn-env irotech.com FCC Confidential Authorization Date: 2020-05-08 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: 2AMV5-SK539-W To: whom it may concern, In accordance with Sections 0. 457 and 0.459 of the Commission’s Rules, Changxing Potek Electronics & Technology Co., Ltd., hereby requests long-term confidential treatment of information accompanying this application as outlined below: Block Diagram Schematics Operation Description The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sincerely Yours, Signature: Typed or Printed Name: FIONA WEN Title: SALES V.P.

Company: Changxin g Potek Electronics & Technology Co., Ltd. Add: No. 1218, Taihu Avenue, Taihu Subdistrict, Changxing County, Huzhou City, Zhejiang, P.R.C. 31319 Tel: 0572-6086600 Fax: 0572-6086669 Date:2020-05-08 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern: We, Changxing Potek Electronics & Technology Co., Ltd., hereby authorizes Bay Area Compliance Laboratories Corporation to act on its behalf in all matters relating to application for Equipment authorization, including the signing of all documents relating to these matters. All acts carried out by Bay Area Compliance Laboratories Corp. on our behalf shall have the same effect as our own action. We, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. This authorization is valid until further written notice from the applicant. Sincerely Yours, Signature: Typed or Printed Name: FIONA WEN Title: SALES V.P. FCC Authorization

EXHIBIT A - EUT EXTERNAL PHOTOGRAPHS Model: SK539-W Model: SK517-W

The 1-outlet wifi smart socket MODEL: SK539‐W FCC ID: 2AMV5-SK539-W IC: 23125-SK539W

EXHIBIT B - EUT INTERNAL PHOTOGRAPHS WiFi Antenna

Bay Area Compliance Laboratories Corp. (Kunshan) Report No.: RKSA200508002-00A FCC Part 15.247 Page 13 of 58 FCC §1.1310 & §2.1091 –MAXIMUM PERMISSIBLE EXPOSURE (MPE) Applicable Standard According to subpart §2.1091 and subpart §1.1310, 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. Limits for Maximum Permissible Exposure (MPE) (§1.1310, §2.1091) (B) Limits for General Population/Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm 2 ) Averaging Time (minutes) 0.3-1.34 614 1.63 *(100) 30 1.34-30 824/f 2.19/f *(180/f²) 30 30-300 27.5 0.073 0.2 30 300-1500 / / f/1500 30 1500-100,000 / / 1.0 30 f = frequency in MHz; * = Plane-wave equivalent power density; According to §1.1310 and §2.1091 RF exposure is calculated. Calculated Formulary: Predication of MPE limit at a given distance S = PG/4πR² = power density (in appropriate units, e.g. mW/cm 2 ); P = power input to the antenna (in appropriate units, e.g., mW); G = power gain of the antenna in the direction of interest relative to an isotropic radiator, the power gain factor, is normally numeric gain; R = distance to the center of radiation of the antenna (appropriate units, e.g., cm); Calculated Data: Mode Frequency Range (MHz) Antenna Gain Target Output Power Evaluation Distance (cm) Power Density (mW/cm 2 ) MPE Limit (mW/cm 2 ) (dBi) (numeric)(dBm)(mW) 802.11b 2412~2462 3.00 2.00 23.50223.87 20 0.0891 1.0 802.11g 3.00 2.00 27.00501.19 20 0.1994 1.0 802.11 n-HT20 3.00 2.00 27.00501.19 20 0.1994 1.0 Note: The target output power was declared by the manufacturer. Conclusion: The device meets MPE at distance 20cm.

Note: This test report is prepared for the customer shown above and for the device described herein. It may not be duplicated or used in part without prior written consent from Bay Area Compliance Laboratories Corp. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. FCC PART 15.247 TEST REPORT For Changxing Potek Electronics & Technology Co., Ltd. No. 1218, Taihu Avenue, Taihu Subdistrict, Changxing County, Huzhou City, Zhejiang, P.R.C. 31319 FCC ID: 2AMV5-SK539-W Report Type: Original Report Product Type: The 1-outlet wifi smart socket Test Engineer: CK Huang Re port Number: RKSA200508002-00A Re port Date: 2020-05-21 Reviewed B y: Oscar Ye EMC Mana ger Prepared By: Bay Area Compliance Laboratories Corp. (Kunshan) No.248 Chenghu Road, Kunshan, Jiangsu province, China Tel: +86-0512-86175000 Fax: +86-0512-88934268 www.baclcorp.com.cn Bay Area Compliance Laboratories Corp. (Kunshan) Report No.: RKSA200508002-00A FCC Part 15.247 Page 2 of 58 TABLE OF CONTENTS GENERAL INFORMATION ....................................................................................................................................... 4 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ..................................................................................... 4 OBJECTIVE ................................................................................................................................................................... 4 RELATED SUBMITTAL(S)/GRANT(S) ............................................................................................................................. 4 TEST METHODOLOGY .................................................................................................................................................. 4 MEASUREMENT UNCERTAINTY .................................................................................................................................... 5 TEST FACILITY ............................................................................................................................................................. 5 SYSTEM TEST CONFIGURATION .......................................................................................................................... 6 DESCRIPTION OF TEST CONFIGURATION ...................................................................................................................... 6 EQUIPMENT MODIFICATIONS ....................................................................................................................................... 6 EUT EXERCISE SOFTWARE .......................................................................................................................................... 6 SUPPORT EQUIPMENT LIST AND DETAILS .................................................................................................................... 9 EXTERNAL I/O CABLE .................................................................................................................................................. 9 BLOCK DIAGRAM OF TEST SETUP ................................................................................................................................ 9 SUMMARY OF TEST RESULTS ............................................................................................................................. 11 Test Equipment List .................................................................................................................................................... 12 FCC §1.1310 & §2.1091 –MAXIMUM PERMISSIBLE EXPOSURE (MPE) ....................................................... 13 FCC §15.203 - ANTENNA REQUIREMENT ........................................................................................................... 14 APPLICABLE STANDARD ............................................................................................................................................ 14 ANTENNA CONNECTOR CONSTRUCTION .................................................................................................................... 14 FCC §15.207 (a) - AC LINE CONDUCTED EMISSIONS ...................................................................................... 15 APPLICABLE STANDARD ............................................................................................................................................ 15 EUT SETUP ................................................................................................................................................................ 15 EMI TEST RECEIVER SETUP ....................................................................................................................................... 15 TEST PROCEDURE ...................................................................................................................................................... 15 FACTOR & OVER LIMIT CALCULATION ...................................................................................................................... 16 TEST RESULTS SUMMARY .......................................................................................................................................... 16 TEST DATA ................................................................................................................................................................ 16 FCC §15.209, §15.205 & §15.247(d) - SPURIOUS EMISSIONS ............................................................................. 19 APPLICABLE STANDARD ............................................................................................................................................ 19 EUT SETUP ................................................................................................................................................................ 19 EMI TEST RECEIVER SE…

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EXHIBIT C - TEST SETUP PHOTOGRAPHS Conducted Emissions (Front View) Conducted Emissions (Side View) Radiated Emissions (Below 1GHz) Radiated Emissions (Above 1GHz)