Detection method photoelectric up to 24 units interconnection capability Power source : 120 VAC 9 V audible alert 85 dB @ 10 ft. horn visual alert red LED diameter 5-3/4 in. height 1-7/8 in. width – Digital readout : No Battery backup : Yes. Features : Interconnectable green power LED red alarm status LED quick connect power harness end of life alarm voice warning Hush button : Yes Locking pin : Yes operating temp. : 40 degrees to 100 degrees F.
- Provides protection from fire and carbon monoxide in one unit with Photoelectric sensor.
- AC-Wire with battery backup An included 9V battery protects during short-term power outages.
- Front-loading battery with unique battery door design.
- Voice warning with green and red LEDs.
- Photoelectric smoke sensor May detect visible fire particles associated with slow smoldering fires sooner than an ionization sensor.
- Tamper resistant.