Smoke and Carbon Monoxide Alarm, Detection Method Photoelectric, Up to 18 Units Interconnection Capability, Power Source 120VAC, (2) AA, Audible Alert 85dB @ 10 ft., Horn, Visual Alert Red LED, Diameter 5 In., Height 2 In.Width -, Digital Readout No, Battery Backup YesHush Button Yes, Locking Pin Yes, Operating Temp. 40 to 100 Degrees F, Standards UL217, UL2034Manufacturers Warranty Length 5 Year Limited Smoke and Combination Smoke/CO AlarmsInterconnectableAlarm Types: Ionization respond best to fast-raging fires. Photoelectric respond best to slow-smoldering fires. All interconnect units must interface directly with their own brand of interconnectable smoke and CO alarms.1XTH3 and 5MPL0 feature voice that announces "Fire", "Carbon Monoxide", and "Low Battery" warnings when detected. 2FTP5 includes voice warning with location of danger detected, and has 2 latching features: 1 identifies initiating alarms and the other low battery.Combination Smoke/CO AlarmsCan silence nuisance and low-battery alarms. Test/Reset button function test11s alarm circuitry, alarm activation, and peak level memory. Feature green LED power-on indicator. Visual red LED indicates when alarm is activated. 85dB horn. Easy installation. Operating temp.: 40 to 100 F. 120VAC, 60 Hz.Meet NFPA 72 standards
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