... handheld or placed on the table or hang on the wall.Wireless unlock control unit connects with the e-lock (electric ... Input, Speaker, Volume -/+, Brightness control -/+, Antenna, Power ON/OFF Switch , Work Light, Charge Light- Dimensions: L:102 x W:134 ... -Microphone, Call button , Speaker, USB interface for charge , Power switch , ‘Pairing’ button, Indicating light for low voltage , Indicating light ...