2AXOF-616SDigital Wireless Real-time Two-Way Intercom

Sep. 15, 2020 To whom it may concern, Shenzhen Macross Automation Technology Co., Ltd. Declarations FCC ID: 2AXOF-616S I, the undersigned, hereby declare that 1. The device does not use the provisions of 47CFR 15.323 (c) (6), random waiting mechanism is not used in this system. 2. The provisions of 47CFR 15.323 (c) (10) and 47CFR 15.323 (c) (11) are not used to extend the range of spectrum occupied over space or time for the purpose of denying fair access to spectrum to other devices. 3. Only the Parent unit will act as the initiating device, which will initiate the establishment of the duplex connection. 4. The device complies with the provisions of 47CFR 15.319(f). The device shall automatically discontinue transmission in case of either absence of information to transmit or operational failure. These provisions are not intended to preclude transmission of control and signaling information or use of repetitive codes used by certain digital technologies to complete frame or burst intervals. The following table explains the reaction of device in case of either absence of information to transmit or operational failure after a connection of its companion device is established. Circumstances Reaction of Wireless Mic 1 Switch-off companion device A 2 On hook by companion device NA 3 Remove power from companion device A 4 Switch-off device A 5 On hook device NA 6 Remove power from device A A – Connection is terminated and, transmission ceases. B – Connection is terminated but device transmits control or signaling information. C – Connection is terminated but companion device transmits control or signaling information. NA – Not applicable represents the device does not contain a hook switch or a power off switch. 5. M L of Wireless Mic declared by manufacturer are 30dBm. If you have questions or need further information, please contact the undersigned. Regards, William Wang General Manager

SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 1 of 7 External Photos for SZEM2009009325CR FCC ID: 2AXOF-616S SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 2 of 7 1 EUT Constructional Details SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 3 of 7 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 4 of 7 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 5 of 7 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 6 of 7 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 7 of 7

Digital Wireless Intercom Model No: HY-616S POWER: DC 5V 1000mA FCC ID: 2AXOF-616S Made in China E-mail: [email protected] 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. Digital Wireless Intercom Model No: MC-616S POWER: DC 5V 1000mA FCC ID: 2AXOF-616S Made in China E-mail: [email protected] 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. Label location:

SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 1 of 5 Internal Photos for SZEM2009009325CR FCC ID: 2AXOF-616S SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 2 of 5 1 EUT Constructional Details ANT. SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 3 of 5 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 4 of 5 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 5 of 5

SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZEM200900932504 Page: 1 of 7 Keny Xu EMC Laboratory Manager 1 Cover page RF Exposure Evaluation Report Application No.: SZEM2009009325CR Applicant: Shenzhen Macross Automation Technology Co., Ltd. Address of Applicant: Room 301-3, #5 Building, Jianghao Technical Park, Bantian St. Longgang District Shenzhen China Manufacturer: Shenzhen Macross Automation Technology Co., Ltd. Address of Manufacturer: Room 301-3, #5 Building, Jianghao Technical Park, Bantian St. Longgang District Shenzhen China Factory: Shenzhen Macross Automation Technology Co., Ltd. Address of Factory: Room 301-3, #5 Building, Jianghao Technical Park, Bantian St. Longgang District Shenzhen China Equipment Under Test (EUT): EUT Name: Digital Wireless Real-time Two-Way Intercom Model No.: HY-616S, MC-616S   Please refer to section 4 of this report which indicates which model was actually tested and which were electrically identical. Trade mark: HOSMART, eMACROS FCC ID: 2AXOF-616S Standards: 47 CFR Part 1.1307 47 CFR Part 1.1310 47 CFR Part 2.1091 Date of Receipt: 2020-09-16 Date of Test: 2020-09-27 to 2020-10-16 Date of Issue: 2020-10-22 Test Result : PASS* * In the configuration tested, the EUT complied with the standards specified above. SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZEM200900932504 Page: 2 of 7 2 Version Revision Record Version Chapter Date Modifier Remark 01 2020-10-22 Original Authorized for issue by: Vincent Chen /Project Engineer Eric Fu /Reviewer SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZEM200900932504 Page: 3 of 7 3 Contents Page 1 COVER PAGE .............................................................................................................................................. 1 2 VERSION ...................................................................................................................................................... 2 3 CONTENTS .................................................................................................................................................. 3 4 GENERAL INFORMATION .......................................................................................................................... 4 4.1 GENERAL DESCRIPTION OF EUT ................................................................................................................. 4 4.2 TEST LOCATION .......................................................................................................................................... 5 4.3 TEST FACILITY ............................................................................................................................................ 5 4.4 DEVIATION FROM STANDARDS ..................................................................................................................... 5 4.5 ABNORMALITIES FROM STANDARD CONDITIONS ............................................................................................ 5 4.6 OTHER INFORMATION REQUESTED BY THE CUSTOMER ................................................................................. 5 5 RF EXPOSURE EVALUATION .................................................................................................................... 6 5.1 RF EXPOSURE COMPLIANCE REQUIREMENT ................................................................................................ 6 5.1.1 Limits ................................................................................................................................................ 6 5.1.2 Test Procedure ................................................................................................................................ 6 5.1.3 EUT RF Exposure Evaluation .......................................................................................................... 7 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZEM200900932504 Page: 4 of 7 4 General Information 4.1 General Description of EUT Power supply: Adapter: Model: JHD-AP006U-050100BB-2 Input: AC100-240V, 50/60Hz 0.2A Output: DC 5V, 1000mA Recharge Battery: DC 3.6V/4.2V, FST 18650-2500mAh Frequency Range: 1921.536 to 1928.448 MHz Number of Channels: 5 RF Channels, 5 × 12 = 60 TDMA Duplex Channels Type of Modulation: Digital (Gaussian Frequency Shift Keying) Modulation Technique: GFSK Antenna Connector: None Antenna Gain: 3dBi (declare by Applicant) Number of Antennas: 1 Antenna Diversity Supported: Yes Hardware Version: A02 Software Version: A02 Remark: Remark: Model No.: HY-616S, MC-616S Only the model HY-616S was tested, since according to the declaration from the applicant, the electrical circuit design, layout, components used, internal wiring and functions were identical for all the above models, with only difference on model number and brands (HOSMART and eMACROS). SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZEM200900932504 Page: 5 of 7 4.2 Test Location All tests were performed at: SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch No. 1 Workshop, M-10, Middle section, Science & Technology Park, Shenzhen, Guangdong, China 518057 Telephone: +86 (0) 755 2601 2053 Fax: +86 (0) 755 2671 0594 No tests were sub-contracted. 4.3 Test Facility The test facility is recognized, certified, or accredited by the following organizations: • A2LA (Certificate No. 3816.01) SGS-CSTC Standards Technical Services Co., Ltd., Shenzhen EMC Laboratory is accredited by the American Association for Laboratory Accreditation(A2LA). Certificate No. 3816.01. • VCCI The 3m Fully-anechoic chamber for above 1GHz, 10m Semi-anechoic chamber for below 1GHz, Shielded Room for Mains Port Conducted Interference Measurement and Telecommunication Port Conducted Interference Measurement of SGS-CSTC Standards Technical Services Co., Ltd. have been registered in accordance with the Regulation…

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SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZEM200900932503 Page: 1 of 59 Keny Xu EMC Laboratory Manager TEST REPORT Application No.: SZEM2009009325CR Applicant: Shenzhen Macross Automation Technology Co., Ltd. Address of Applicant: Room 301-3, #5 Building, Jianghao Technical Park, Bantian St. Longgang District Shenzhen China Manufacturer: Shenzhen Macross Automation Technology Co., Ltd. Address of Manufacturer: Room 301-3, #5 Building, Jianghao Technical Park, Bantian St. Longgang District Shenzhen China Factory: Shenzhen Macross Automation Technology Co., Ltd. Address of Factory: Room 301-3, #5 Building, Jianghao Technical Park, Bantian St. Longgang District Shenzhen China Equipment Under Test (EUT): EUT Name: Digital Wireless Real-time Two-Way Intercom Model No.: HY-616S, MC-616S ♣ ♣ Please refer to section 2 of this report which indicates which model was actually tested and which were electrically identical. Trade mark: HOSMART, eMACROS FCC ID: 2AXOF-616S Standards: 47 CFR Part 15, Subpart D Date of Receipt: 2020-09-16 Date of Test: 2020-09-25 to 2020-10-16 Date of Issue: 2020-10-22 Test Result: Pass* * In the configuration tested, the EUT complied with the standards specified above. SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZEM200900932503 Page: 2 of 59 Revision Record Version Chapter Date Modifier Remark 01 2020-10-22 Original Authorized for issue by: Vincent Chen /Project Engineer Eric Fu /Reviewer SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZEM200900932503 Page: 3 of 59 2 Test Summary Test Item FCC Test Requirement Result Antenna Requirement 15.317;15.203 Pass Power Line Conducted Emission 15.207(a) Pass Digital Modulation Techniques 15.319(b) Pass Channel Frequencies 15.303 Pass Automatic discontinuation of transmission 15.319(f) Pass Emission Bandwidth 15.323(a) Pass In-band emissions 15.323(d) Pass Out-of-band emissions 15.323(d) Pass Peak Transmit Power and Antenna Gain 15.319(c)(e); 15.31(e) Pass Power Spectral Density 15.319(d) Pass Carrier frequency stability 15.323(f) Pass Frame repetition stability 15.323(e) Pass Frame period and jitter 15.323(e) Pass Monitoring threshold, Least interfered channel 15.323(c)(2)(5)(9) Pass Monitoring of intended transmit window and maximum reaction time 15.323(c)(1) Pass Threshold monitoring bandwidth 15.323(c)(7) Pass Reaction time and monitoring interval 15.323(c)(1)(5)(7) Pass Access criteria test interval 15.323(c)(4)(6) Pass Access Criteria functional test 15.323(c)(4)(6) Pass Acknowledgements 15.323(c)(4) Pass Transmission duration 15.323(c)(3) Pass Dual access criteria 15.323(c)(10) Pass Alterative monitoring interval 15.323(c)(11)(12) N/A 1 Spurious Emissions (Radiated) 15.319(g); 15.209(a) Pass 1 The client declares that the tested equipment does not implement this provision Remark: Model No.: HY-616S, MC-616S Only the model HY-616S was tested, since according to the declaration from the applicant, the electrical circuit design, layout, components used, internal wiring and functions were identical for all the above models, with only difference on model number and brands (HOSMART and eMACROS). SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZEM200900932503 Page: 4 of 59 3 Contents Page 1 COVER PAGE ............................................................................................................................................ 1 2 TEST SUMMARY ....................................................................................................................................... 3 3 CONTENTS ................................................................................................................................................ 4 4 GENERAL INFORMATION ........................................................................................................................ 5 4.1 DETAILS OF E.U.T. ............................................................................................................................... 5 4.2 TEST ENVIRONMENT AND MODE ............................................................................................................ 5 4.3 DESCRIPTION OF SUPPORT UNITS ......................................................................................................... 6 4.4 MEASUREMENT UNCERTAINTY .............................................................................................................. 6 4.5 TEST LOCATION .................................................................................................................................... 7 4.6 TEST FACILITY ...................................................................................................................................... 7 4.7 DEVIATION FROM STANDARDS ............................................................................................................... 7 4.8 ABNORMALITIES FROM STANDARD CONDITIONS ..................................................................................... 7 5 EQUIPMENT LIST ...................................................................................................................................... 8 6 TEST RESULTS AND MEASUREMENT DATA ...................................................................................... 11 6.1 ANTENNA REQUIREMENT .................................................................................................................... 11 6.2 DIGITAL MODULATION TECHNIQUES ..................................................................................................... 11 6.3 AUTOMATIC DISCONTINUATION OF TRANSMISSION................................................................................. 12 6.4 CONDUCTED EMISSIONS ..................................................................................................................... 13 6.5 PEAK POWER OUTPUT .........................................…

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SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 1 of 3 Setup Photos for SZEM2009009325CR FCC ID: 2AXOF-616S SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 2 of 3 1 Photographs 1.1 Conducted Emissions at Mains Terminals (150kHz-30MHz) Test Setup 1.2 Radiated Emissions (30MHz-1GHz) Test Setup SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 3 of 3 1.3 Radiated Emissions (Above 1GHz) Test Setup