BRK 120V AC Smoke Alarm with battery back-up - 9120BA/9120B Smoke and Carbon Detector Diameter #7 Length 2 1/4"

Diameter #7 Length 2 1/4" Drive Type Phillips Thread Type UNF Material Carbon Steel Imperial or Metric Imperial Packaging Option Packaged Pieces Per Package 300

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BRK 120V AC Smoke Alarm with battery back-up - 9120BA/9120B Smoke and Carbon Detector Diameter #7 Length 2 1/4"SPECIFICATIONS Brand BRK Part Number 9120BA Dimensions 5. 58 dia. x 1. 97 H Function Smoke Weight 7. 8 oz. 221g Operating Voltage 120V AC 60Hz w 9V battery backup (9120BA) Power 0. 04 amps (standby alarm) Temperature Range 40 F (4C) to 100F (38C) Humidity Range 10% to 95% relative humidity (RH) Audio Alarm 85dB at 10 feet Interconnections Up to 18 units of which 12 can be smoke alarms Wiring Quick connect plug with pigtails Sensor Dual chamber