RadioShack 4-Channel 900MHz Wireless Intercom with VOX Mode

Make your voice heard, automatically. This easy-to-use intercom enables you to talk and be heard automatically with VOX-triggered transmission. In VOX mode, the system will transmit your voice without pressing any buttons. This system is expandable, so with the purchase of additional 900MHz stations, you can customize your own system and talk from any room in your home. No installation or wiring is necessary, simply plug it into a nearby AC outlet or insert 4 "AA" batteries (sold separately). You can even connect a radio, CD player, boombox or other audio device and listen to music from any room on the system. 900MHz transmission for enhanced clarity with less interference VOX mode transmits your voice without pressing any buttons Expandable, so you can customize your own system Convenient, 4-channel operation Compatible with 43-3102 intercoms What's in the box Wireless Intercom (2) AC Adapter (2) User Guide You'll also need AA Batteries (4)