Gentex AC/DC Smoke Detector with 135 Degree Heat Sensor

The 9123/9223 Series is provided with a 9V alkaline battery for back-up in the event building power is lost. The Gentex 9123/9223 Series provides an exclusive patented three-position test feature that simulates a 0.85% and 3.5% actual smoke condition in full compliance with NFPA 72 and UL Standards. Options include self-restoring 135°F integral or isolated heat thermals and Form A/Form C dry contacts for remote annunciation.