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Hardwired heat alarm with battery backup is designed for areas not suitable for smoke alarms, such as garages, kitchens, or laundry rooms. Rate-of-rise thermistor sensing triggers the 85 dB alarm if the temperature reaches 135 °F or rises more than 15 °F in one minute, helping detect dangerous heat quickly. Unit interconnects with compatible First Alert/BRK alarms and includes a 9V backup battery.
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Hardwired heat alarm with battery backup is designed for areas not suitable for smoke alarms, such as garages, kitchens, or laundry rooms. Rate-of-rise thermistor sensing triggers the 85 dB alarm if the temperature reaches 135 °F or rises more than 15 °F in one minute, helping detect dangerous heat quickly. Unit interconnects with compatible First Alert/BRK alarms and includes a 9V backup battery.

The right temp in just the right spot - Meet the Nest Temperature Sensor (2nd gen). Now it’s easy to manage hot and cold spots throughout your home. Just put it in your preferred room and get the right temp, right where you want it. It’s battery powered, so you can set it, then forget it’s even there.¹
| Pros for First Alert - Hard-Wired w/Battery Back-up Ionization Heat Alarm 1 pk | |||
|---|---|---|---|
| There were no pros for this product— | Overall Performance, Connectivity, Temperature Control, Setup Process, Accuracy | Installation Ease, Connectivity, Overall Performance, Compatibility, Battery Life | Installation Ease, Connectivity, Overall Performance, Compatibility, Design |
| Cons for First Alert - Hard-Wired w/Battery Back-up Ionization Heat Alarm 1 pk | |||
| There were no cons for this product— | There were no cons for this product— | Features, Alarm Accuracy, Night Light, Size | Features, Alarm Accuracy, Lighting, Sensitivity |