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Specifications of SM11R1 Specs_Acc_Audio Dimensions 80.0* 60.0* 40.0mm Weight about 225g Color black PTT Key available Emergency Key none Connector RJ45 Microphone Sensitivity -45±3dB@1kHz 3.0V 2.2K;0dB=1V/Pa IP Rating IP54 Operating Temperature -30~65℃ Storage Temperature -40~85℃

It is placed on the desktop in the office for dispatching. Specifications of SM10A1 Specs_Acc_Audio Dimensions 107* 65* 148.6mm Weight about 170g Color black PTT Key available Emergency Key none Connector 10-pin connector Microphone Sensitivity -40±2dB@1kHz 3.0V 2.2K,0dB=1V/Pa IP Rating none Operating Temperature -30~70℃ Storage Temperature -40~85℃

It works with ADA-01 to form SM27W1-A1 kit for meeting police dispatch. Specifications of SM27W1 Specs_Acc_Audio Weight about 120g Color black PTT Key available Emergency Key available Microphone Sensitivity -42±3 dB @ 1 kHz 3.0 V 2.2 K, 0 dB = 1 V/Pa Speaker Power 2 W (rated); 2.5 W (max.) Speaker Impedance 4 Ω±15% @ 1 kHz Speaker Frequency Response 83±4 dB @ 1 kHz 1 W/100 cm Communication Protocol Bluetooth V4.0 BT Range 8-10 m Certification CE, FCC, and IC Battery Life ≥ 15 h (5/5/90) Charging Time ≤ 3.5 h IP Rating IP54 Operating Temperature -20℃ to 60℃ Storage Temperature -20℃ to 60℃