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Features: Designed for use as a wireless doorbell and intercom for residential, as well as commercial applications
1,000 foot range with no wires or power connection required
Crystal clear, secure 900MHz digital communication
Weather-resistant (doorbell unit)
Easy to use - installs in minutes
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)
Compatible with the following Chamberlain wireless intercoms (models NLS1, NLS2, and NTD2)