CO detector 1.Electrochemical co detector 2.EN50291 co detector 3.Test/Hush Button,fault signal warning 4.Low Battery Alarm co detector is used to detect the carbon monoxide. PW-916 Stand-alone co detector could be one of the most advanced designs in detection Carbon Monoxide using NEMOTO.Battery powered models last long life (exceeds 3-year period and up to 5-years), PW-916 co detector is the perfect choice for detecting dangerous CO poisoning. Various power input can be manufactured according to customer's special request for PW-916 co detector. Features: 1.Sensor Type: Electrochemical co detector; 2. Non-radioactive technology for environmental friendly co detector; 3.Power Supply: 3*AA 1.5V(TOTAL 4.5V) Alkaline Battery; 4.Standby Current: 10uA; 5.Alarm Current: 23mA; 6.Operation Temperature: 0?°- 50?°; 7.Low battery warning; 8.Fault signal warning; 9.Self-Test Button to verify operation; 10.With quick fix mounting bracket for easy installation; 11.Silence function with 3 led indicators; 12.CO detector Sensitivity meets EN50291 or UL2034; 13.Alarm Sound Level: >85dB at 10 feet (3m); 14.Easy to install, move and maintain; 15.Five years limited warranty for the CO-sensing; Operation Temperature 0 oC to 50 oC Response Times At 50 ppm, unit must alarm within 60 ~ 90 mins At 100 ppm, unit must alarm within 10 ~ 40 mins At 300 ppm, unit must alarm within 3 mins Power Source 3*AA 1.5V(TOTAL 4.5V) Alkaline Battery Standby Current 10uA Alarm Current 23mA Alarm Sound Level 85 decibels at 3 m Detection Type Electrochemical Ambient Humidity 15% to 90% Relative Humidity