Chamberlain NDIS Wireless Doorbell & Intercom System
Convenient, Expandable Communication Inside Or Outside A Home;. 1,000-ft Range With No Wires Or Power Connection;. Clear, Secure 900 Mhz Digital Communication;. Fully Secure Connection;. Easy To Use -installs In Minutes;. Expandable With Up To 12 Units Per Network;. Includes 2 Weather-resistant Wireless Portable Intercoms;. 2-year Battery Life -requires 4 Aa Batteries Per Unit;. 1-year Warranty.
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