Battery operated carbon monoxide alarm  Response time:  50 ppm 60-90 minutes  100ppm 10-40 minutes  ≥300ppm within 3 minutes  Power source:3pcs 1.5V AA battery.  Standby mode:80uA  Working mode:0.4~1.5mA  Alarming mode:50~65mA  Alarm decibel:≥85db/1m  Push to Test  Low battery signalCO Detector