4-Wired Smoke Detector-DS-PDSMK-4BAR(O-STD)

Advanced algorithms provide advanced detection discrimination;Sleek low-profile housing design;Stable photoelectric smoke sensing chamber. No adjustment or replacement required;High immunity against unwanted alarms;Surface-mount device (SMD) circuit board design;Dual LEDs for 360° visibility;4-wire models for DC 12 V operation;4-wire models include a N/C or N/O alarm relay output;4-wire models available with auto-reset function;4-wire models available with an internal sounder