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https://www.hytera.com/en/product-new/accessories/audio/sm16a1.html

Specifications of Hytera SM16A1
Specifications
Dimensions82.0* 56.0* 32.2mm
Weightabout 120g
Colorblack
PTT Keyavailable
Emergency Keynone
Connector10-pin connector
Microphone Sensitivity-21±3dB@1kHz 3.0V 2.2K,0dB=1V/Pa
IP RatingIP54
Operating Temperature-30~65℃
Storage Temperature-40~85℃

Hytera Communications Corporation Limited (SZSE: 002583) is a leading global provider of professional communications technologies and solutions. With voice, video and data capabilities, we provide faster, safer, and more versatile connectivity for business and mission critical users. We enable our customers to achieve more in both daily operations and emergency response to make the world more efficient and safer.