CRL 9B3ASA Satin Anodized 120V AC Thru-Glass Two-Way Digital Electronic Communicator - Level 3

CRL Thru-Glass Two-Way Digital Electronic Communicators contain the latest advancements in electronic sound transmission devices. Clear, distortion free two-way conversations can take place through secure barriers as the unit senses sound levels and automatically increases volume when speech on interior side (clerk's side) begins. Easy-to-operate multi-function controls on the clerk's side turn the Communicator on and off, set to mute, and adjust the volume. Different headset styles and other accessories are available. Select either the AC Plug-In Transformer Model, or the DC Rechar