CRL 9ASA Thru-Glass Two-Way Digital Electronic Communicator, 120v AC, Satin Anodized

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. An industry first, the CRL Thru-Glass Two-Way Digital Electronic Communicator offers a full-duplex mode option