6-Zone monitoring capability. Pre-recorded or self-recorded messages for each zone. Six detection zones with separate voice messages (6 seconds each). Missed message flashing LED indicator. Zone detection indicators. Custom recording button. Speaker volume control. Supports an unlimited number of Sensors and Base Stations. 4 C relay dry contact outputs interface with X-10, Lutron and Leviton DHC devices to trigger other lights. Weatherproof, battery powered wireless PIR sensor transmitter. 1000 ft. range in open air, 300 ft. through walls. Sensor battery lasts 1 year. Low battery LED on receiver indicates sensor with low battery. Adjustable mounting, beam sensitivity and delay timer. Multiple beam patterns for optimal detection.