International Electronics Chamberlain Wireless Intercom.
Compatible with the following Chamberlain wireless intercoms (models NDIS, NTD2, and NLS1).
1,000 foot range with no wires or power connection required- Crystal clear, secure 900MHz digital communication- High-tech design and modern look blends in with today's tech-friendly, contemporary homes- Improved controls makes it easy to operate.
Power adapter is optional and each unit requires (4) AA batteries not includedCHNLS2, CH-NLS2.
Advanced features include voice activation and monitor mode- Broadcast to all channels simultaneously or speak to one party with Secured Link- Single or multi-channel communication- Expansion with additional units (up to 64 per network) can enhance your home's communication to multiple locations- 2-year battery life.requires four AA batteries per unit (not included).