MAIN FEATURE ?High reliability sensor ?Auto-reset after alarm ?MCU processing adopted ?Malfunction auto-check indicator ?Alarm output N.C./ N.O. optional ?Dual sensor design ?Be able to work with electrovalve /exhaust fan ?SMT adopted, excellent stability ?Available for CO TECHNICAL SPECIFICATION Operating voltage: 220V AC or 12V DC Rated power: =3W (220V AC power supply) Warm-up time: 3-5 minutes Alarm level: 100 PPM of CO Alarm indicator: Corresponding Red LED flash Malfunction indicator: Yellow LED on & Beeper long-buzz Alarm sound: =70dB (within 1 meter) Operating temperature: -10? to 50? Environmental humidity: =95% RH (No congelation) Installation mode: Wall mounted Alarm output: Relay output /sound & flash alarm Dimension: 115*72*41mm Execute criterion: GB15322.2-2003