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Combine four-wire smoke and CO sensing, distinct system signals, RealTest verification, a replaceable CO cell, and temporal-three/four sounder tones. -
Equip a compatible four-wire circuit with photoelectric smoke sensing, a 135 F thermal element, freeze trouble, and an 85 dB temporal sounder. -
Use separate power and alarm wiring with a 4-wire photoelectric smoke detector, drift compensation, removable chamber, and dual-color status LEDs. -
Monitor smoke and carbon monoxide with a 2-wire system detector, replaceable 10-year CO cell, RealTest, distinct panel signals, and 85 dB sounder. -
Combine photoelectric smoke sensing, 135 F heat detection, freeze trouble, and an 85 dB temporal sounder on a compatible two-wire circuit. -
Add system-connected smoke detection with a 2-wire photoelectric head, drift compensation, dual-color status LEDs, and plug-in mounting base.