KD-218A Carbon Monoxide Alarm

Response time: 27±3 PPM>120min, 55±5 PPM 60-90min, 110±10 PPM 10-40min, 330±30 PPM<3min
Concentration range displayed: 10-550PPM
Power source: DC4.5V, 3PCS AA batteries
Battery service life: 2years
Static working current: <30uA
Alarm current: <65mA
Alarm sound: >85dB (3M distance)
Dimension: 107*77*36mm