2AAYF-AF3889 channel FM wireless intercom

DATE : Sep 16, 2013 Nemko Canada Inc 303 River Road Ottawa, Ontario, Canada K1V 1H2 Attn: Director of Certification Authority to Act as Agent On our behalf, I appoint _ Shenzhen BATT Testing Technology Co., Ltd. 11F, Bldg.B, Xinbaoyuan, Xinanhu Commercial city, Bao’an District, Shenzhen, Guangdong, China _, to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the Federal Communications Commission’s regulations will have affixed to it a label identical to that submitted for approval with this application. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for certification, as specified by Nemko Canada Inc, still resides with Calford Technology Ltd../ Room 107, Wah Wai Centre, 38 – 40 Au Pui Wan Street, Fo Tan, Shatin, N.T., Hong Kong. Dated this Sep 16, 2013 Agency agreement expiration date: Usually Give 8 - 12 Months By: Vincent Cheung Signature Printed Title: Director On behalf of : Calford Technology Ltd. Telephone: 852-23307330

DATE : Sep 16, 2013 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2AAYF-AF388 Product Name: 9 channel FM wireless intercom Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the commissions rules, we hereby request that the following documents be held confidential: • Schematics • Block diagram • Operational Description • Part List & Tune up These materials contain trade secrets and proprietary information and are not customarily released to the public. The public disclosure of this information might be harmful to the company and provide unjustified benefits to our competitors. Dated this Sep 16, 2013 Agency agreement expiration date: Usually Give 8 - 12 Months By: Vincent Cheung Signature Printed Title: Director On behalf of : Calford Technology Ltd. Telephone: 852-23307330

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Maximum Permissible Exposure Applicable Standard 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 limit for maximum permissible exposure. In accordance with 47 CFR FCC Part 2 Subpart J, section 2.1091 this device has been defined as a mobile device whereby a distance of 0.2m normally can be maintained between the user and the device. (a) Limits for Occupational / Controlled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/cm 2 ) Averaging Times ︱E︱ 2 , ︱H︱ 2 or S (minutes) 0.3-3.0 614 1.63 (100)* 6 3.0-30 1842/f 4.89/f (900/f)* 6 30-300 61.4 0.163 1.0 6 300-1500 F/300 6 1500-100000 5 6 (b) Limits for General Population / Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/cm 2 ) Averaging Times ︱E︱ 2 , ︱H︱ 2 or S (minutes) 0.3-1.34 614 1.63 (100)* 30 1.34-30 824/f 2.19/f (180/f)* 30 30-300 27.5 0.073 0.2 30 300-1500 F/1500 30 1500-100000 1.0 30 Note: f=frequency in MHz; *Plane-wave equivalent power density MPE Calculation Method E (V/m) = (30*P*G) 0.5 /d Power Density: Pd (W/m 2 ) = E 2 /377 E = Electric Field (V/m) P = Peak RF output Power (W) G = EUT Antenna numeric gain (numeric) d = Separation distance between radiator and human body (m) The formula can be changed to Pd = (30*P*G) / (377*d 2 ) From the peak EUT RF output power, the minimum mobile separation distance, d=0.2m, as well as the gain of the used antenna, the RF power density can be obtained. Calculated Result and Limit (Worse Case) Antenna Gain (Numeric) Peak Output Power (dBm) Peak Output Power (mW) Power Density (S) (mW/cm 2 ) Limit of Power Density (S) (mW/cm 2 ) Test Result 1.585 23.58 228 0.072 0.312 Compiles

Extremity SAR test exclusion According to §1.1307(b)(5), systems operating under the provisions of this section shall be operated in a manner that ensure that the public is not exposed to radio frequency energy level in excess of the Commissions guideline. The device has a standalone transmission only. The minimum separation between antenna and CALL key is 3 cm (refer to the photo below). According to KDB 447498 section 4.3.1, the 10-g SAR test exclusion thresholds at test separation distances≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] •[√f(GHz)] = 228 / 30 * (0.4676) 1/2 = 5.2, this value is less than 7.5 for 10-g extremity SAR. The extremity SAR measurement is not necessary.

Shenzhen BATT Testing Technology Co., Ltd. Report No.: BATT201309028 FCC Page 1 of 44 FCC TEST REPORT Prepared For : Calford Technology Ltd. Product Name: 9 channel FM wireless intercom Model : AF388 Prepared By : Shenzhen BATT Testing Technology Co., Ltd. 11F, Bldg.B, Xinbaoyuan, Xinanhu Commercial city, Bao’an District, Shenzhen, Guangdong, China. Tel: 86-755-27753991 Fax: 86-755-27754182 Test Date: August 16 to Sep 11, 2013 Date of Report : Sep 12, 2013 Report No.: BATT201309022FCC Note: This report shall not be reproduced except in full, without the written approval of Shenzhen BATT Testing Technology Co., Ltd. This document may be altered or revised by Shenzhen BATT Testing Technology Co., Ltd. personnel only, and shall be noted in the revision section of the document. The test results in the report only apply to the tested sample Shenzhen BATT Testing Technology Co., Ltd. Report No.: BATT201309022FCC Page 2 of 44 TABLE OF CONTENTS 1.0 TEST CERTIFICATION............................................................................... 3 2.0 Test Equipment......................................................................................... 5 3.0 Technical Details........................................................................................ 6 4.0 Test Lab Details......................................................................................... 6 5.0 Power Line Conducted Emission Test............................................................ 7 6.0 Frequency Tolerance.................................................................................. 11 7.0 Emission Bandwidth and Mask..................................................................... 14 8.0 Unwanted Radiation................................................................................... 24 9.0 Modulation Characteristics........................................................................... 27 10.0 Maximum transmitter Power (Conducted Output Power).................................... 31 11.0 Radiated Emission on Receiving Mode........................................................... 32 12.0 FCC ID Label............................................................................................ 35 13.0 Photo of Test Setup and EUT View................................................................ 36 Shenzhen BATT Testing Technology Co., Ltd. Report No.: BATT201309022FCC Page 3 of 44 1 TEST CERTIFICATION Product: 9 channel FM wireless intercom Model: AF388 Applicant: Calford Technology Ltd. Room 107, Wah Wai Centre, 38 – 40 Au Pui Wan Street, Fo Tan, Shatin, N.T., Hong Kong. Manufacturer: Guangdong Samzuk Technology Development Co., Ltd High-Tech Zone Xinggong Avenue East Heyuan City（2/F of Minghuang Electrical Engineering Company Building Trade Mark: N/A Tested: August 16 to Sep 11, 2013 Test Voltage: DC6V Powered by power supply Operational Frequency Range: 462.5625MHz, 462.5875MHz, 462.6125MHz, 462.6375MHz, 462.6625MHz, 462.6875MHz, 462.7125MHz, 467.5625MHz, 467.5875MHz Modulation Type: F 3E Frequency Selection By Key button Channel Number 9 Channel provided to the EUT Antenna: Integral antenna with Gain 2.0 dBi Power Supply: Model No.: NLA080060W1A1 Input: AC100-240V, 50/60Hz, 0.2A; Output: DC6V, 800mA FCC ID: 2AAYF-AF388 Applicable Standards: FCC Part 95, Subpart B and Subpart E; The test report was prepared by Shenzhen BATT Testing Technology Co., Ltd.and found compliance with the requirements set forth in the technical standards mentioned above. The results of testing in this report apply only to the product/system, which was tested. Other similar equipment will not necessarily produce the same results due to production tolerance and measurement uncertainties. Shenzhen BATT Testing Technology Co., Ltd. Report No.: BATT201309022FCC Page 4 of 44 Prepared by : Hellen XiaoAssistant Reviewer : Mike Yong/Supervisor Approved & Authorized Signer : Jones Song/ Manager Shenzhen BATT Testing Technology Co., Ltd. Report No.: BATT201309022FCC Page 5 of 44 2.0 Test Equipments Instrument Type Manufacturer Model Serial No. Date of Cal. Due Date ESPI Test Receiver ROHDE&SCHWA RZ ESPI 3 100379 2013-05-27 2014-05-26 EMI Test Receiver Rohde & Schwarz ESU 1302.6005.26 2013-05-27 2014-05-26 Impuls-Begrenzer ROHDE&SCHWA RZ ESH3-Z2 100281 2013-05-27 2014-05-26 Loop Antenna EMCO 6502 00042960 2013-05-27 2014-05-26 ESPI Test Receiver ROHDE&SCHWA RZ ESI26 838786/013 2013-05-27 2014-05-26 3m OATS -- -- N/A 2013-05-27 2014-05-26 Horn Antenna SCHWARZBECK BBHA 9170 BBHA9170399 2013-05-27 2014-05-26 Horn Antenna SCHWARZBECK BBHA 9120 D143 2013-05-27 2014-05-26 Power meter Anritsu ML2487A6K00003613 2013-05-27 2014-05-26 Power sensor Anritsu MA2491A32263 2013-05-27 2014-05-26 Bilog Antenna Schwarebeck VULB916 3 9163/142 2013-05-27 2014-05-26 LISN (Three Phase) Schwarebeck NSLK 8126 8126453 2013-05-27 2014-05-26 9*6*6 Anechoic -- -- N/A 2013-05-27 2014-05-26 EMI Test Receiver RS ESCS30 100139 2013-05-27 2014-05-26 LISN RS ESH2-Z5 100225 2013-05-27 2014-05-26 LISN (Three Phase) Schwarebeck NSLK 8126 8126453 2013-05-27 2014-05-26 Pre-Amplifier A.H. PAM-01261415261 2013-05-27 2014-05-26 Modulation Analyzer HP 8901B 3104A03367 2013-06-16 2014-06-15 Shenzhen BATT Testing Technology Co., Ltd. Report No.: BATT201309022FCC Page 6 of 44 3.0 Technical Details 3.1 Summary of test results The EUT has been tested according to the following specifications: Standard Test Type Result Notes FCC Part 15.207 Conducted Emission Pass Complies FCC Part 95.639 Maximum Transmitter Power Pass Complies FCC Part 95.637 Modulation Characteristic Pass Complies FCC Part 95.633 Occupied Bandwidth Pass Complies FCC Part 95.633 Emission Mask Pass Complies FCC Part 95.626 Frequency Tolerance Pass Complies FCC Part 95.635 Spurious Radiated Emissions Pass Complies 4.0 Test LAB Details All Tests Performed at Name: Shenzhen Emtek Co., Ltd. Address: Bldg. 69, Majialong Industry Zone,,Nanshan District,Shenzhen, Guangdong, 518052China FCC Registration Number: …

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Conducted test View-- Radiated emission test view