The First Alert hardwire dual photoelectric and ionization sensor smoke alarm with battery backup is designed to provide peace of mind. The photoelectric and ionization sensors on this fire detector alert you to both smoldering and fast-flaming fires, offering comprehensive detection and early warning. The 85 dB fire alarm can connect to other compatible hardwired detectors for larger spaces.
|Sound Level||:||85 dB|
|Sensor Type||:||Ionization, Photoelectric|
|Power Supply||:||120 V|
|Operating Temperature||:||40 to 100 deg F|
|Dimensions||:||5.7 in L x 5.7 in W x 2.4 in H|
|Includes||:||(2) AA Battery Backup|