RF Exposure Information

FCC ID: BKMAE-WH55

RF Exposure Info

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FCCID_4335242

MRT Technology (Taiwan) Co., Ltd Report No.: 1905TW0110-U2 Phone: +886-3-3288388 Report Version: V01 Web: www.mrt-cert.com Issue Date: 06-18-2019 RF Exposure Evaluation Declaration FCC ID: BKMAE-WH55 APPLICANT: SEIKO EPSON CORPORATION Application Type: Certification Product: REMOTE CONTROLLER Model No.: WH-55 Trademark: EPSON FCC Classification: Digital Transmission System (DTS) Test Procedure(s): KDB 447498 D01v06 Test Date: June 09, 2019 Reviewed By: ( Paddy Chen ) Approved By: (Chenz Ker) The test results relate only to the samples tested. The test results shown in the test report are traceable to the national/international standards through the calibration of the equipment and evaluated measurement uncertainty herein. The test report shall not be reproduced except in full without the written approval of MRT Technology (Taiwan) Co., Ltd. FCC ID: BKMAE-WH55 Page Number: 1 of 8

Report No.: 1905TW0110-U2 Revision History Report No. Version Description Issue Date Note 1905TW0110-U2 Rev. 01 Initial report 06-18-2019 Valid FCC ID: BKMAE-WH55 Page Number: 2 of 8

Report No.: 1905TW0110-U2 1. PRODUCT INFORMATION 1.1. Equipment Description Product Name: REMOTE CONTROLLER Model No.: WH-55 Brand Name: EPSON Bluetooth Specification v4.2 Single mode (BLE Only) 1.2. Product Specification Subjective to this Report Frequency Range: 2402~2480MHz Channel Number: 40 Type of Modulation: GFSK Data Rate: 1Mbps Antenna Type: PCB Antenna Antenna Gain: 1.92dBi Note: For other features of this EUT, test report will be issued separately. FCC ID: BKMAE-WH55 Page Number: 3 of 8

Report No.: 1905TW0110-U2 2. RF Exposure Evaluation 2.1. Limits SAR Test Exclusion Thresholds for 100 MHz – 6 GHz and ≤ 50 mm Approximate SAR Test Exclusion Power Thresholds at Selected Frequencies and Test Separation Distances are illustrated in the following Table. The equation and threshold in Note 1 must be applied to determine SAR test exclusion. MHz 5 10 15 20 25 mm 150 39 77 116 155 194 SAR Test 300 27 55 82 110 137 Exclusion 450 22 45 67 89 112 Threshold 835 16 33 49 66 82 (mW) 900 16 32 47 63 79 1500 12 24 37 49 61 1900 11 22 33 44 54 2450 10 19 29 38 48 3600 8 16 24 32 40 5200 7 13 20 26 33 5400 6 13 19 26 32 5800 6 12 19 25 31 MHz 30 35 40 45 50 mm 150 232 271 310 349 387 SAR Test 300 164 192 219 246 274 Exclusion 450 134 157 179 201 224 Threshold 835 98 115 131 148 164 (mW) 900 95 111 126 142 158 1500 73 86 98 110 122 1900 65 76 87 98 109 2450 57 67 77 86 96 3600 47 55 63 71 79 5200 39 46 53 59 66 5400 39 45 52 58 65 5800 37 44 50 56 62 Note: The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: FCC ID: BKMAE-WH55 Page Number: 4 of 8

Report No.: 1905TW0110-U2 [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] * [√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where  f(GHz) is the RF channel transmit frequency in GHz  Power and distance are rounded to the nearest mW and mm before calculation  The result is rounded to one decimal place for comparison  3.0 and 7.5 are referred to as the numeric thresholds in the step 2 below The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm according to 5) in section 4.1 is applied to determine SAR test exclusion. 1.1. Test Procedure Software provided by client enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. The temperature and related humidity: 20°C and 75% RH. FCC ID: BKMAE-WH55 Page Number: 5 of 8

Report No.: 1905TW0110-U2 2.2. Test Result of RF Exposure Evaluation Product REMOTE CONTROLLER Test Item RF Exposure Evaluation Output Power into Antenna: Test Mode Frequency Band Maximum output Maximum output SAR Test Exclusion (MHz) power to antenna power to antenna Threshold (mW) (dBm) (mW) Bluetooth 2402 ~ 2480 6.30 4.2658 10 Note: Maximum output power to antenna (dBm) = Max average conducted Power (dBm) + Antenna Gain (dBi), Max average conducted Power = 4.38dBm, Antenna Gain = 1.92dBi Per FCC KDB 447498 D01v06, the SAR exclusion threshold for distances<50mm is defined by the following equation: Based on the maximum conducted power of Bluetooth and the antenna to use separation distance, Bluetooth SAR was not required; [(4.2658mW/5)* √2.480] = 1.3436 < 3.0 The Max Pd = 1.3436 < 3.0 Note: When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. FCC ID: BKMAE-WH55 Page Number: 6 of 8

Report No.: 1905TW0110-U2 1.2. FINAL CONCLUSION The device is excluded for SAR test and complies with the FCC exposure requirements since the maximum conducted peak output power is lower than the SAR test exclusion thresholds. The End FCC ID: BKMAE-WH55 Page Number: 7 of 8

Report No.: 1905TW0110-U2 Appendix A - EUT Photograph Refer to “1905TW0110-UE” file. FCC ID: BKMAE-WH55 Page Number: 8 of 8


Document Created: 2019-06-23 23:06:14
Document Modified: 2019-06-23 23:06:14
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