This additional unit can be used to expand your Wireless 4 Channel Intercom System (HC-WHWI4C).  Ideal for homes, apartments, offices, stores, and small businesses. Easy to expand. Just plug into any electrical outlet and talk. Talk to or monitor ANY number of rooms or offices with 4 available channels.
This additional 4 channel plug-in intercom unit features:
Compatible with all Westinghouse Plug-in intercoms.
Up to 1500 foot range Dimensions:
Unit is 6 3/16 in x 5 ½ in x 1 ¼ in
UL approved.
Manufacturer: Westinghouse
Manufacturer warranty: 1 year limited
Product questions: 800-842-5378