Chamberlain NTD2 door intercom system

Wireless Indoor/Outdoor Portable Intercom, Black, 2 pack A set of two weather-resistant wireless portable intercoms that provide convenient and expandable communication inside and outside your home.

- 1,000 foot range with no wires or power connection required
- Crystal clear, secure 900MHz digital communication
- Fully secure connection
- Expansion with additional units (up to 64 per network) can enhance your home's communication to multiple locations
- Weather-resistant
- Easy to use - installs in minutes
- 2-year battery life; requires four AA batteries per unit (not included)
- 1-year warranty
- Compatible with the following Chamberlain® wireless intercoms (models NDIS, NLS1, and NLS2)