XEY-ZX-WUZX Wired Thermostat

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Federal Communications Commission Authorization and Evaluation Division Permanent Confidentiality Request regarding application for certification of FCC ID: XEY-ZX-WU/ ICC#:8410A-ZXWU. Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request permanent confidential treatment of information accompanying this application as outlined below: Exhibit Type Block diagram, Schematics, Operational Description The above materials contain trade secrets and proprietary information not customarily released to the public, the public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, Jianan Cao

ZX WIRED THERMOSTAT External Photos:

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ZX WIRED THERMOSTAT Internal Photos:

© TÜV SÜD Canada Inc. This test report shall not be reproduced except in full, without written approval of TÜV SÜD Canada Inc. April 23, 2020 FCC-XEY-ZX-WU_RF_Exposure Exhibit: RF Exposure – FCC FCC ID: XEY-ZX-WU IC: 8410A-ZXWU © TÜV SÜD Canada Inc. This test report shall not be reproduced except in full, without written approval of TÜV SÜD Canada Inc. April 23, 2020 FCC-XEY-ZX-WU_RF_Exposure 1 Product ZX Root Node Thermostat Verdant Environmental Technologies Inc Client Standard(s) FCC Part 15 Subpart 15.247:2016 FCC KDB 447498:2015 SAR Calculations: 902.8 – 927.7 MHz FHSS transmitter The EUT contains both 902 – 928 MHz and 2402 – 2480 Bands of FHSS transmitters. The firmware guarantees simultaneous operation will not occur and therefore antenna co-location testing is not applicable. This device is designed to be operated handheld and for the purpose of demonstrating compliance with MPE requirements and SAR exemption; we present for a worst case 5mm distance and 100 % duty cycle. 902 – 928 MHz Band FCC Requirements: SAR test exclusion guidance As per FCC KDB 447498 D01 Section 4.3.1 a), the 1-g extremity SAR Test Exclusion Threshold for 100 MHz to 6 GHz at test separation distances ≤ 50 mm is determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] [√f(GHz)] ≤ 3.0 Performing the calculation, of the worst case mentioned above, using the maximum power measured of 12.8mW (see Table 20 in page 50 of TR-7169005571-FCC-ISED-ZX Wired Thermostat.pdf) yields to: 12.8 5 ∙ √ 0.927525=2.47, 2.47 is below the 3.0 worst case limit, so this device complies with FCC requirements ISED Requirements: SAR test exclusion guidance As per Table 1 in RSS-102, Section 2.5.1 at 1900MHz is 7mW at 5mm or less. This device has effective isotropic radiated power (as worst-case vertical polarization at 915MHz, with a peak value of 100 dBμV/m i - 95.2 (factor to convert to EIRP at 3 meters) of 4.8dBm, or 3mW. • 3mW is less than 7mW limit as per section 2.5.1 on RS-102, thus the device meets the exception rules. © TÜV SÜD Canada Inc. This test report shall not be reproduced except in full, without written approval of TÜV SÜD Canada Inc. April 23, 2020 FCC-XEY-ZX-WU_RF_Exposure 1 Product ZX Root Node Thermostat Verdant Environmental Technologies Inc Client Standard(s) FCC Part 15 Subpart 15.247:2016 FCC KDB 447498:2015 2402 – 2480 MHz Band FCC Requirements: SAR test exclusion guidance As per FCC KDB 447498 D01 Section 4.3.1 a), the 1-g extremity SAR Test Exclusion Threshold for 100 MHz to 6 GHz at test separation distances ≤ 50 mm is determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] [√f(GHz)] ≤ 3.0 Performing the calculation, of the worst case mentioned above, using the maximum power measured of 7.56mW (see Table 19 in page 50 of TR-7169005571-FCC-ISED-ZX Wired Thermostat.pdf) yields to: 7.56 5 ∙ √ 0.927525=1.44, 1.44 is below the 3.0 worst case limit, so this device complies with FCC requirements ISED Requirements: SAR test exclusion guidance As per Table 1 in RSS-102, Section 2.5.1 at 2450MHz is 4mW at 5mm or less. This device has effective isotropic radiated power (as worst-case vertical polarization at 915MHz, see, for instance with a peak value of 100 dBμV/m ii - 95.2 (factor to convert to EIRP at 3 meters) of 4.8dBm, or 3mW. • 3mW is less than 4mW limit as per section 2.5.1 on RS-102, thus the device meets the exception rules. i See, pag.90 in TR-7169005571-FCC-ISED-ZX Wired Thermostat.pdf ii See pag.94 in TR-7169005571-FCC-ISED-ZX Wired Thermostat.pdf

TÜV SÜD Product Service is a trading name of TUV SUD Ltd 2972 Joseph-A-Bombardier Laval, QC H7P 6E3 Canada TUV SUD Ltd is a TÜV SÜD Group Company Phone: +450-687-4976 www.tuv-sud.ca TÜV SÜD Product Service RESPONSIBLE FOR NAME DATE SIGNATURE Test Specialist Abderrahmane Ferhat 12-09-2019 Authorised Signatory Scott Drysdale 12-09-2019 Signatures in this approval box have checked this document in line with the requirements of TÜV SÜD Product Service document control rules. EXECUTIVE SUMMARY A sample of this product was tested and found to be in compliance withFCC Part 15.247 Subpart C/ ICES 003 Issue 6 and RSS- 247 Issue 2. A2LA Cert. No. 2955.20 DISCLAIMER AND COPYRIGHT This non-binding report has been prepared by TÜV SÜD Canada with all reasonable skill and care. The document is confidential to the potential Client and TÜV SÜD Canada. No part of this document may be reproduced without the prior written approval of TÜV SÜD Canada. © TÜV SÜD. ACCREDITATION Our A2LA Accreditation does not cover opinions and interpretations and any expressed are outside the scope of our A2LA Accreditation. FCC/ISED RF Test Report As per RSS-247 Issue 2 FCC Part 15.247 Subpart C & ICES 003 Issue 6 on the ZX Wired Thermostat IC:8410A-ZXWU; FCCID:XEY-ZX-WU Prepared to: Verdant. Environmental Technologies, Inc. 1850 – 55 th Avenue, Lachine, Quebec, H8T 3J5 CANADA Verdant Environmental Technologies, Inc.. Document Number: PR-7169005571- FCC-ISED, Issue 01 | 2019.09.12 ZX Wired Thermostat COMMERCIAL-IN-CONFIDENCE No part of this document may be reproduced without the prior written approval of TÜV SÜD Canada. © TÜV SÜD. Page 2 of 100 Contents 1Report Summary .........................................................................................................................7 2Introduction .............................................................................................................................. 10 3EUT: ZX WIRED THERMOSTAT .............................................................................................. 15 3.1Specifications: ............................................................................................................................ 15 3.2Modes of Operation .................................................................................................................... 18 3.3Setup Diagram ........................................................................................................................... 18 4Deviations from the Standard ................................................................................................. 19 5Measurement Uncertainty ....................................................................................................... 19 699% Bandwidth ......................................................................................................................... 20 6.1Purpose & Methods .................................................................................................................... 20 6.2Test Specifications ..................................................................................................................... 20 6.3Test Results ............................................................................................................................... 21 6.4Graphs ........................................................................................................................................ 22 6.5Test Instruments ......................................................................................................................... 27 76dB Bandwidth of Digitally Modulated Systems ................................................................... 28 7.1Purpose & Methods .................................................................................................................... 28 7.2Test Specifications ..................................................................................................................... 28 7.3Test Results ............................................................................................................................... 29 7.4Graphs ........................................................................................................................................ 30 7.5Test Instruments ......................................................................................................................... 33 8Hopping Channel ...................................................................................................................... 34 8.1Purpose & Methods .................................................................................................................... 34 8.2Test Specifications ..................................................................................................................... 34 8.3Limits .......................................................................................................................................... 35 8.4Test Results ............................................................................................................................... 35 8.5Graphs ........................................................................................................................................ 36 8.6Test Instruments ......................................................................................................................... 39 9Channel Separation.................................................................................................................. 40 9.1Purpose & Methods .................................................................................................................... 40 9.2Test Specifications ..................................................................................................................... 40 9.3Limits .............................................................................................…

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