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First Alert 9120B Smoke Alarm, 120 V, Ionization Sensor, 85 dB, White
Designed to help promote household safety, the first Alert 9120B hardwired smoke alarm with battery backup can provide a vital early warning of fire. This hardwired smoke detector uses an ionization smoke sensor to reliably detect smoke from hot, fast-flaming fires.
| Sound Level | 85 dB |
| Sensor Type | Ionization |
| Power Supply | 120 V |
| Operating Temperature | 40 to 100 deg F |
| Color | White |
| Dimensions | 5.6 in L x 1.9 in W x 5.6 in H |
| Includes | 9 V Battery |