Test Report

FCC ID: BJ4-WLTX313-A

Test Report

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FCCID_4343631

2/F., Garment Centre, 576 Castle Peak Road, Kowloon, Hong Kong. Telephone: (852) 2173 8888 Facsimile: (852) 2785 5487 www.intertek.com TEST REPORT Report No.: 18121037HKG-004 HeathCo LLC FCC ID: BJ4-WLTX313-A (Application for Class II Permissive Change of 47 Part 15 Certification) IC: 3984A-WLTX313A (Class II Permissive Change of RSS-210 Issue 9 Equipment Certification) Transmitter Prepared and Checked by: Approved by: Digitally signed by Kenneth Wong Location: Intertek Testing Services Hong Kong Ltd. Signed On File Wong Cheuk Ho, Herbert Wong Kwok Yeung, Kenneth Lead Engineer Senior Lead Engineer Date: July 02, 2019 Intertek’s standard Terms and Conditions can be obtained at our website http://www.intertek.com/terms/. The test report only allows to be revised within the retention period unless further standard or the requirement was noticed. This report is for the exclusive use of Intertek's Client and is provided pursuant to the agreement between Intertek and its Client. Intertek's responsibility and liability are limited to the terms and conditions of the agreement. Intertek assumes no liability to any party, other than to the Client in accordance with the agreement, for any loss, expense or damage occasioned by the use of this report. Only the Client is authorized to permit copying or distribution of this report and then only in its entirety. Any use of the Intertek name or one of its marks for the sale or advertisement of the tested material, product or service must first be approved in writing by Intertek. The observations and test results in this report are relevant only to the sample tested. This report by itself does not imply that the material, product, or service is or has ever been under an Intertek certification program. © 2017 Intertek Page 1 of 22

HeathCo LLC Intertek Report No: 18121037HKG-004.doc TEST REPORT GENERAL INFORMATION Grantee: HeathCo LLC Grantee Address: 2445 Nashville Road, Bowling Green, KY. 42101 Contact Person: Jeff Bessinger Tel: 270-846-8271 Fax: N/A e-mail: jbessinger@heathcollc.com Manufacturer: HeathCo LLC Manufacturer Address: 2445 Nashville Road, Bowling Green, KY. 42101 Brand Name: Heath, HeathCo, Heath/Zenith Model / HVIN: WLTX-313-A PMN: WLTX-313-A Type of EUT: Transmitter Description of EUT: Wireless Door Chime Transmitter Serial Number: N/A FCC ID / IC: BJ4-WLTX313-A / 3984A-WLTX313A Date of Sample Submitted: June 28, 2019 Date of Test: June 28, 2019 to July 02, 2019 Report No.: 18121037HKG-004 Report Date: July 02, 2019 Environmental Conditions: Temperature: +10 to 40°C Humidity: 10 to 90% Conclusion: Test was conducted by client submitted sample. The submitted sample as received complied with the 47 CFR Part 15 / RSS-210 Issue 9 Certification. Page 2 of 22

HeathCo LLC Intertek Report No: 18121037HKG-004.doc TEST REPORT SUMMARY OF TEST RESULT Test Specification Reference Results Transmitter Field Strength, 15.231(a), (b), (c) / Pass Bandwidth and Timing Requirement RSS-210 A1.1.1 The equipment under test is found to be complying with the following standards: FCC Part 15, October 1, 2017 Edition RSS-210 Issue 9, August 2016 RSS-Gen Issue 5 + Amendment 1, March 2019 Note: 1. The EUT uses a permanently attached antenna which, in accordance to section 15.203, is considered sufficient to comply with the pervisions of this section. 2. Pursuant to FCC part 15 Section 15.215(c), the 20 dB bandwidth of the emission was contained within the frequency band designated (mentioned as above) which the EUT operated. The effects, if any, from frequency sweeping, frequency hopping, other modulation techniques and frequency stability over excepted variations in temperature and supply voltage were considered. Page 3 of 22

HeathCo LLC Intertek Report No: 18121037HKG-004.doc TEST REPORT TABLE OF CONTENTS 1.0 GENERAL DESCRIPTION ................................................................................................ 5 1.1 Product Description ...................................................................................................5 1.2 Purpose of Change .....................................................................................................5 1.3 Test Methodology ......................................................................................................5 1.4 Test Facility ................................................................................................................5 2.0 SYSTEM TEST CONFIGURATION ..................................................................................... 6 2.1 Justification ................................................................................................................6 2.2 EUT Exercising Software.............................................................................................6 2.3 Special Accessories ....................................................................................................6 2.4 Measurement Uncertainty.........................................................................................6 2.5 Support Equipment List and Description ....................................................................6 3.0 EMISSION RESULTS....................................................................................................... 7 3.1 Field Strength Calculation ..........................................................................................7 3.2 Radiated Emission Configuration Photograph............................................................8 3.3 Radiated Emission Data .............................................................................................8 4.0 EQUIPMENT PHOTOGRAPHS ...................................................................................... 10 5.0 PRODUCT LABELLING.................................................................................................. 10 6.0 TECHNICAL SPECIFICATIONS ....................................................................................... 10 7.0 INSTRUCTION MANUAL .............................................................................................. 10 8.0 MISCELLANEOUS INFORMATION ................................................................................ 11 8.1 Measured Bandwidth ..............................................................................................12 8.2 Discussion of Pulse Desensitization ..........................................................................13 8.3 Calculation of Average Factor ..................................................................................13 8.4 Emissions Test Procedures .......................................................................................17 8.5 Occupied Bandwidth ................................................................................................20 9.0 CONFIDENTIALITY REQUEST ....................................................................................... 21 10.0 EQUIPMENT LIST ........................................................................................................ 21 Page 4 of 22

HeathCo LLC Intertek Report No: 18121037HKG-004.doc TEST REPORT 1.0 GENERAL DESCRIPTION 1.1 Product Description The Equipment Under Test (EUT) is a Wireless Door Chime Transmitter (315MHz Wireless push button). When the button of the EUT is activated, the corresponding 315MHz remote door bell receiver (Wireless Plug-in Chime) will sound. No battery is needed as the EUT is powered by the electro-motive force generated by the induction coil activated by mechanical bouncing energy at the releasing moment of the push button. The EUT will be deactivated after the button bouncing. Antenna Type: Internal, Integral For electronic filing, the brief circuit description is saved with filename: descri.pdf. 1.2 Purpose of Change The changes that are made on new model from the original certified model. - Main PCB layout - Cost reduction after new PCB layout (no quality impact) - Antenna matching circuit – RC components values for better matching Therefore, the purpose of this application is to report changes in the original certified product. The RF portion and its power setting are remained the same, and other designs including electrical, electronic and mechanical are identical. 1.3 Test Methodology Radiated emission measurements were performed according to the procedures in ANSI C63.10 (2013). All radiated measurements were performed in an 3m Chamber. Preliminary scans were performed in the 3m Chamber only to determine worst case modes. All radiated tests were performed at an antenna to EUT distance of 3 meters, unless stated otherwise in the “Justification Section” of this Application. 1.4 Test Facility The 3m Chamber used to collect the radiated data is located at Workshop No. 3, G/F., World- Wide Industrial Centre, 43-47 Shan Mei Street, Fo Tan, Sha Tin, N.T., Hong Kong. This test facility and site measurement data have been placed on file with the FCC and IC No. 2042H. Page 5 of 22

HeathCo LLC Intertek Report No: 18121037HKG-004.doc TEST REPORT 2.0 SYSTEM TEST CONFIGURATION 2.1 Justification The system was configured for testing in a typical fashion (as a customer would normally use it), and in the confines as outlined in ANSI C63.10 (2013). The device was powered by 3.0V DC power supply during test. For maximizing emissions, the EUT was rotated through 360°, the antenna height was varied from 1 meter to 4 meters above the ground plane, and the antenna polarization was changed. This step by step procedure for maximizing emissions led to the data reported in Exhibit 3.0. The unit was operated standalone and placed in the center of the turntable. The equipment under test (EUT) was configured for testing in a typical fashion (as a customer would normally use it). The EUT was mounted to a plastic stand if necessary and placed on the wooden turntable, which enabled the engineer to maximize emissions through its placement in the three orthogonal axes. 2.2 EUT Exercising Software There was no special software to exercise the device. Once the unit is powered up, it transmits the RF signal continuously. 2.3 Special Accessories There are no special accessories necessary for compliance of this product. 2.4 Measurement Uncertainty When determining of the test conclusion, the Measurement Uncertainty of test has been considered. 2.5 Support Equipment List and Description N/A. Page 6 of 22

HeathCo LLC Intertek Report No: 18121037HKG-004.doc TEST REPORT 3.0 EMISSION RESULTS Data is included of the worst case configuration (the configuration which resulted in the highest emission levels). A sample calculation, configuration photographs and data tables of the emissions are included. 3.1 Field Strength Calculation The field strength is calculated by adding the Antenna Factor and Cable Factor, and subtracting the Amplifier Gain (if any), Average Factor (optional) from the measured reading. The basic equation with a sample calculation is as follows: FS = RA + AF + CF - AG - AV where FS = Field Strength in dBµV/m RA = Receiver Amplitude (including preamplifier) in dBµV CF = Cable Attenuation Factor in dB AF = Antenna Factor in dB AG = Amplifier Gain in dB AV = Average Factor in dB In the following table(s), the reading shown on the data table reflects the preamplifier gain. An example for the calculations in the following table is as follows: FS = RR + LF where FS = Field Strength in dBµV/m RR = RA - AG - AV in dBµV LF = CF + AF in dB Assume a receiver reading of 52.0 dBµV is obtained. The antenna factor of 7.4 dB and cable factor of 1.6 dB are added. The amplifier gain of 29 dB and average factor of 5 dB are subtracted, giving a field strength of 32 dBµV/m. This value in dBµV/m was converted to its corresponding level in µV/m. RA = 52.0 dBµV/m AF = 7.4 dB RR = 18.0 dBµV CF = 1.6 dB LF = 9.0 dB AG = 29.0 dB AV = 5.0 dB FS = RR + LF FS = 18 + 9 = 27 dBµV/m Level in µV/m = Common Antilogarithm [(27 dBµV/m)/20] = 22.4 µV/m Page 7 of 22

HeathCo LLC Intertek Report No: 18121037HKG-004.doc TEST REPORT 3.2 Radiated Emission Configuration Photograph The worst case in radiated emission was found at 315.005 MHz For electronic filing, the worst case radiated emission configuration photographs are saved with filename: radiated photos.pdf. 3.3 Radiated Emission Data The data on the following page lists the significant emission frequencies, the limit and the margin of compliance. Numbers with a minus sign are below the limit. Judgment: Passed by 18.7 dB Page 8 of 22

HeathCo LLC Intertek Report No: 18121037HKG-004.doc TEST REPORT RADIATED EMISSIONS Model: WLTX-313-A Date of Test: July 02, 2019 Worst-Case Operating Mode: Transmitting Table 1 Pursuant to FCC Part 15 Section 15.231(a) / RSS-210 A1.1 Requirement Average Pre- Antenna Average (Average) Limit at Polari- Frequency Reading Amp factor Factor Net at 3m 3m Margin zation (MHz) (dBµV) (dB) (dB) (dB) (dBµV/m) (dBµV/m) (dB) H 315.005 63.2 16 23.0 13.3 56.9 75.6 -18.7 H 630.008 27.8 16 29.0 13.3 27.5 55.6 -28.1 V 945.018 27.2 16 33.0 13.3 30.9 55.6 -24.7 H 1260.000 46.7 34 26.1 13.3 25.5 55.6 -30.1 H 1575.000 47.0 34 27.2 13.3 26.9 54.0 -27.1 H 1890.000 56.9 34 27.2 13.3 36.8 55.6 -18.8 V 2205.000 53.0 34 29.4 13.3 35.1 54.0 -18.9 V 2520.000 52.2 34 30.4 13.3 35.3 55.6 -20.3 H 2835.000 52.0 34 30.4 13.3 35.1 54.0 -18.9 H 3150.000 48.9 34 31.9 13.3 33.5 55.6 -22.1 NOTES: 1. Peak Detector Data unless otherwise stated. 2. All measurements were made at 3 meters. Harmonic emissions not detected at the 3- meter distances were measured at 0.3-meter and an inverse proportional extrapolation was performed to compare the signal level to the 3-meter limit. No other harmonic emissions than those reported were detected at a test distance of 0.3-meter. 3. Negative sign in the column shows value below limit. 4. Horn antenna is used for the emission over 1000MHz. 5. Emission (the row indicated by bold italic) within the restricted band meets the requirement of FCC Part 15 Section 15.205 / RSS-210 4.1. 6. Measurement Uncertainty is ±5.3dB at a level of confidence of 95%. Page 9 of 22

HeathCo LLC Intertek Report No: 18121037HKG-004.doc TEST REPORT 4.0 EQUIPMENT PHOTOGRAPHS For electronic filing, the photographs are saved with filename: external photos.pdf and internal photos.pdf. 5.0 PRODUCT LABELLING For electronics filing, the FCC ID label artwork and the label location are saved with filename: label.pdf. 6.0 TECHNICAL SPECIFICATIONS For electronic filing, the block diagram and schematic of the tested EUT are saved with filename: block.pdf and circuit.pdf respectively. 7.0 INSTRUCTION MANUAL For electronic filing, a preliminary copy of the Instruction Manual is saved with filename: manual.pdf. This manual will be provided to the end-user with each unit sold/leased in the United States and Canada. Page 10 of 22

HeathCo LLC Intertek Report No: 18121037HKG-004.doc TEST REPORT 8.0 MISCELLANEOUS INFORMATION The miscellaneous information includes details of the test procedure and measured bandwidth / calculation of factor such as pulse desensitization and averaging factor (calculation and timing diagram). Timing Plot – Pursuant to FCC Part 15 Section 15.231(a1)- A manually operated transmitter shall employ a switch that will automatically deactivate the transmitter within not more than 5 seconds of being released. Result: Transmission Duration = 24ms (within 5 seconds - Pass) Page 11 of 22

HeathCo LLC Intertek Report No: 18121037HKG-004.doc TEST REPORT 8.1 Measured Bandwidth The plot shows the fundamental emission when modulated. From the plot, the bandwidth is observed to be 31.8Hz, at 20dBc where the bandwidth limit is 787.5kHz. Page 12 of 22

HeathCo LLC Intertek Report No: 18121037HKG-004.doc TEST REPORT 8.2 Discussion of Pulse Desensitization Pulse desensitivity is not applicable for this device. The effective period (Teff) is approximately 21.648ms for a digital “1” bit which illustrated on technical specification, with a resolution bandwidth (3dB) of 1MHz, so the pulse desensitivity factor is 0dB. 8.3 Calculation of Average Factor The duty cycle is simply the on-time divided by the period: The duration of one cycle = 100ms Effective period of the cycle = 4 x 4.8ms + 1 x 2.4ms + 1 x 48µs = 21.648ms DC = 21.648 / 100 = 0.21648ms Therefore, the averaging factor is found by 20log 0.21648 = -13.3dB. Page 13 of 22

HeathCo LLC Intertek Report No: 18121037HKG-004.doc TEST REPORT AVERAGE FACTOR Page 14 of 22

HeathCo LLC Intertek Report No: 18121037HKG-004.doc TEST REPORT AVERAGE FACTOR Page 15 of 22

HeathCo LLC Intertek Report No: 18121037HKG-004.doc TEST REPORT AVERAGE FACTOR Page 16 of 22

HeathCo LLC Intertek Report No: 18121037HKG-004.doc TEST REPORT 8.4 Emissions Test Procedures The following is a description of the test procedure used by Intertek Testing Services Hong Kong Ltd. in the measurements of transmitter operating under the Part 15, Subpart C rules. The transmitting equipment under test (EUT) is placed on a wooden turntable which is four feet in diameter and approximately 0.8m in height above the ground plane for emission measurement at or below 1GHz and 1.5m in height above the ground plane for emission measurement above 1GHz. During the radiated emissions test, the turntable is rotated and any cables leaving the EUT are manipulated to find the configuration resulting in maximum emissions. The EUT is adjusted through all three orthogonal axis to obtain maximum emission levels. The antenna height and polarization are also varied during the testing to search for maximum signal levels. The height of the antenna is varied from one to four meters. Detector function for radiated emissions is in peak mode. Average readings, when required, are taken by measuring the duty cycle of the equipment under test and subtracting the corresponding amount in dB from the measured peak readings. A detailed description for the calculation of the average factor can be found in Exhibit 8.3. The frequency range scanned is from the lowest radio frequency signal generated in the device which is greater than 9 kHz to the tenth harmonic of the highest fundamental frequency or 40 GHz, whichever is lower. Page 17 of 22

HeathCo LLC Intertek Report No: 18121037HKG-004.doc TEST REPORT 8.4 Emissions Test Procedures (cont’d) The EUT is warmed up for 15 minutes prior to the test. AC power to the unit is varied from 85% to 115% nominal and variation in the fundamental emission field strength is recorded. If battery powered, a new, fully charged battery is used. Conducted measurements were made as described in ANSI C63.10 (2013). The IF bandwidth used for measurement of radiated signal strength was 100 kHz or greater when frequency is below 1000 MHz. Where pulsed transmissions of short enough pulse duration warrant, a greater bandwidth is selected according to the recommendations of Hewlett Packard Application Note 150-2. A discussion of whether pulse desensitivity is applicable to this unit is included in this report (See Exhibit 8.1). Above 1000 MHz, a resolution bandwidth of 3 MHz is used. Transmitter measurements are normally conducted at a measurement distance of three meters. However, to assure low enough noise floor in the forbidden bands and above 1 GHz, signals are acquired at a distance of one meter or less. All measurements are extrapolated to three meters using inverse scaling, unless otherwise reported. Measurements taken at a closer distance are so marked. Page 18 of 22

HeathCo LLC Intertek Report No: 18121037HKG-004.doc TEST REPORT 8.4.1 Radiated Emission Test Setup The figure below shows the test setup, which is utilized to make these measurements. Antenna 1.0~4.0m Tower 3m Receiver Antenna E U T 0.8m Ground Plane 3m Chamber □ RF Test Receiver Test setup of radiated emissions up to 1GHz Antenna 1.0~4.0m Tower 3m Receiver E Antenna U T 1.5m Ground Plane □ RF Test Spectrum Analyzer Test setup of radiated emissions above 1GHz Page 19 of 22

HeathCo LLC Intertek Report No: 18121037HKG-004.doc TEST REPORT 8.5 Occupied Bandwidth Occupied Bandwidth Results: Frequency (MHz) Occupied Bandwidth (kHz) 315MHz 178 The plot shows the fundamental emission when modulated. From the plot, the bandwidth is observed to be 178kHz. The 99% Occupied bandwidth limit is 787.5kHz. Page 20 of 22

HeathCo LLC Intertek Report No: 18121037HKG-004.doc TEST REPORT 9.0 CONFIDENTIALITY REQUEST For electronic filing, a preliminary copy of the confidentiality request is saved with filename: request.pdf. 10.0 EQUIPMENT LIST 1) Radiated Emissions Test Equipment EMI Test Receiver Spectrum Analyzer Biconical Antenna Registration No. EW-3156 EW-2253 EW-0571 Manufacturer R&S R&S EMCO Model No. ESR26 FSP40 3104C Calibration Date November 19, 2018 November 27, 2018 February 27, 2018 Calibration Due Date November 19, 2019 November 27, 2019 August 27, 2019 Equipment Log Periodic Antenna Double Ridged Guide 14m Double Shield RF Antenna Cable (20MHz to 6GHz) Registration No. EW-0447 EW-1015 EW-2505 Manufacturer EMCO EMCO RADIALL Model No. 3148 3115 nm / br5d / sma 14m Calibration Date January 17, 2018 May 17, 2019 October 27, 2018 Calibration Due Date July 17, 2019 November 16, 2020 October 27, 2019 Equipment RF Cable 14m Active Loop H-field (1GHz to 26.5GHz) (9kHz to 30MHz) Registration No. EW-2781 EW-2313 Manufacturer GREATBILLION ELECTROMETRI Model No. SMA m/SHF5MPU EM-6876 /SMA m ra14m,26G Calibration Date October 27, 2018 March 08, 2018 Calibration Due Date October 27, 2019 September 08, 2019 Page 21 of 22

HeathCo LLC Intertek Report No: 18121037HKG-004.doc TEST REPORT 2) Bandedge Measurement Equipment RF Cable (up to 40GHz) Spectrum Analyzer 1.5m length Registration No. EW-3104 EW-2253 Manufacturer N/A R&S Model No. SMA-M to SMA-M FSP40 Calibration Date July 03, 2018 November 27, 2018 Calibration Due Date July 03, 2019 November 27, 2019 END OF TEST REPORT Page 22 of 22


Document Created: 2019-07-03 16:10:33
Document Modified: 2019-07-03 16:10:33
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