![]() Direct Wire 135 Degree F Fixed Temperature Rate of Rise Heat Sensor 120 volt battery back-up. Test button. LED power indicator. Audible low battery signal. For multiple (up to 18 units-5 heat alarms and 12 smoke alarms) or single station. One 9-volt battery included. |
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Electrical: Smoke and Carbon Monoxide Detectors: Smoke Detectors