it can be equipped with oxygen sensors, gas sensors and two kinds of toxic gas sensors or choose any four toxic gas sensors or choose any single gas sensors.

alarm function post
• Security Tip: regular Flash, audio cues
• Superior audio sound alarm
• Maintenance costs are very low
• To support the 1, 2, 3 or 4 kinds of gas detection
Gas detection: air carbon monoxide (CO)
Range: 0-100ppm
Basic error: < ± 5% (F.S)
Minimum reading: 1ppm/0.1ppm
Response time: = 25 seconds
Sensor life: 24 months

Gas: the air in hydrogen sulfide (H2S)
Range: 0-100ppm
Basic error: < ± 5% (F.S)
Minimum reading: 1ppm
Response time: = 30 seconds
Sensor life: 24 months
Electrochemical sensor types:
Gas detection: sulphur dioxide (SO2)
Range: 0-100ppm
Basic error: < ± 5% (F.S)
Minimum reading: 0.1ppm
Response time: = 30 seconds
Sensor life: 24 months
Electrochemical sensor types:
Gas: the air