BRK wireless interconnect enabled alarm|Voice alarm with programmable location, programmable with up to eleven locations|Single button test/silence|Two silence features can silence the low battery chirp for up to 8 hr or temporarily silence an unwanted nuisance alarm|RF interconnect reliable and secure radio frequency communication between alarms, 915 MHz frequency with 65000 security codes and 3 channel frequency hopping|Patented technology provides 360 deg of direct access to the smoke sensor|Perfect mount allows for easy alignment of alarm|Spread spectrum horn tone lower and varying frequency makes it easier for the elderly with normal aged related hearing loss to hear the horn|Alarm latch remembers which unit initiated an alarm, low battery latch to visually identifies unit in low battery condition|End of life signal provides audible notification alarms needs to be replaced|2-way communication format that sends, receives and re-sends the alarm signals providing a more reliable network|Tamper-resistant locks alarm to mounting bracket to prevent removal of battery and/or alarm, perfect for apartment, dormitory or hotel applications|Electronically simulates carbon monoxide condition, causing the unit to alarm, press and hold test/silence button|Alarm reset automatic when carbon monoxide clears