Radio Shack 3-Channel FM Wireless Intercom, 43-490, Three Units

All units tested and working.

This is a wireless intercom system with three units to serve three locations in your home or business. Each unit is powered with 120-volt AC (no battery backup), and uses the AC wiring for sending the intercom signal throughout circuits in your house. Therefore, to call it wireless is technically incorrect because it actually is using wires, they just happen to be the power wires in the building. Will not work between different buildings unless both are using the same circuit breaker panel.

Includes three separate units and owner’s manual.