SIERRA MONITOR 4501-05 Type 4X Toxic Gas Detector 0-100 PPM H2S
Full Scale: 0-100Ppm H2S. Factory Settings: 100 Ppm H2S. Hydrogen Sulfide. Sierra Monitor 4501-05. Smc-sierra Monitor Corporation. Model No: 4501-05. We are here to help and will do our best to resolve any issues.