Chamberlain Wireless Portable Intercom System — Set of Two, 1000ft. Transmission Range

4-channel intercom system that does not require wall power and features 1000ft. range. This system allows up to 10 conversations simultaneously with 32 radio channels and works on 4 AA batteries for up to 2 years, ALWAYS ON. Compatible with all other Chamberlain wireless intercoms Item#s 331716, 331719, 333180, 331727. U.S.A. Application: Wireless intercom, Monitor Dimension (in.): N/A, Channels (qty.): 32 Requires NO connection to wall power TWO-WAY, digital wireless voice communication Digital FM Modulation with High Fidelity Sound Ultra clear sound quality Multi-channel with unlimited unit expansion Connections are Digital and Fully Secured With &Quot;Paging&Quot; function &Quot;broadcast&Quot; to all stations, then speak to responding station privately, with a secured link Up to 10 simultaneous conversations without interference &Quot;Monitor Mode&Quot; now has &Quot;TALK BACK&Quot; feature that allows you to speak to monitored units even though unit is transmitting The &Quot;Monitor Mode&Quot; features most advanced Voice Operated Switch (VOX). Allows you to customize sensitivity settings and avoid unwanted sounds. In Monitor Mode batteries will last 4 months Multiple Monitor Modes: Single Channel, All Channel Conference Capability Two-Way conversation after single button push Volume Control feature Secure 900 MHz radio link Extremely long battery life Very intuitive and simple to use