Features:
Sensitivity/Alarm Time:
Within 60~90 minutes at 50ppm CO concentration;
Within 10~40 minutes at 100ppm CO concentration;
Within 3 minutes at 300ppm CO concentration
LCD Displayer (optional): 4 digits LCD displayer
Audibility: 85dB ( at 1m distance ), Frequency 3 - 0.5KHZ
Standby Current: