60w Amplifier BNC Cable it has a HI/LO proximity

it has a HI/LO proximity voltage detector with two voltage ranges: 50V-4kV AC (LO) and 4kV-500kV AC (HI)

3way Conferencing With Handsfree Speakers In Base Unit And Handsets

Dimensions (WxDxH) 2 in x 1 in x 3

The durable Valcom VL520BK-F-IC   Compact Speaker w/ Text InformaCast has a large easy to read display capable of single or dual-line text

Multi-biometric reader with finger vein and fingerprint authentication

60w Amplifier BNC Cable it has a HI/LO proximity60w Amplifier 3 Models: 35 60 And 100 Watts 4 Inputs: 1 Mic 1 Aux 1 Tel Plus 1 Selectable Mic Or Aux Each Input Controlled By An Independent Volume Control Treble And Bass Controls Aux Muting By External Contact Closure For Pushtotalk Microphones Tel Input For Telephone Paging Applications Tel Input Voiceactivated (vox) Mute Over Aux Input Variable Threshold For Tel Input Voiceactivated Aux Mute Outputs For 4ohm (direct) 8ohm (c35 & C60 Models Only)