See table below for Gas type, Range, Resolution and Part #
Replacement Sensor Modules sold Separately from the Monitors.
| Gas | Measuring Range (PPM) | Resolution (PPM) | PART # |
| CO Carbon Monoxide | 500 | 1 | M080-0001-000 |
| CO | 1000 | 1 | M080-0001-001 |
| CO | 2000 | 1 | M080-0001-002 |
| H2S Hydrogen Sulfide | 50 | 0.1 | M080-0002-000 |
| H2S | 100 | 0.1 | M080-0002-001 |
| H2S | 200 | 0.1 | M080-0002-002 |
| H2S | 1000 | 1 | M080-0018-000 |
| O2 Oxygen | 25% | 0.10% | M081-0001-000 |
| O2 | 30% | 0.10% | M081-0001-001 |
| SO2 Sulfur Dioxide | 20 | 0.1 | M080-0005-000 |
| SO2 | 100 | 0.1 | M080-0005-001 |
| Cl2 Cholrine | 50 | 0.1 | M080-0006-000 |
| NO Nitric Oxide | 250 | 1 | M080-0009-000 |
| NO2 Nitrogen Dioxide | 20 | 0.1 | M080-0008-000 |
| H2 Hydrogen | 1000 | 1 | M080-0013-000 |
| H2 | 2000 | 1 | M080-0013-001 |
| PH3 Phosphine | 20 | 0.01 | M080-0003-000 |
| ETO Ethylene Oxide | 100 | 0.1 | M080-0014-000 |
| ETO | 200 | 0.1 | M080-0014-001 |
| NH3 Ammonia | 100 | 1 | M080-0004-000 |
| NH3 | 500 | 1 | M080-0004-100 |
| CIO2 Chlorine Dioxide | 1 | 0.01 | M080-0015-000 |
| HCN Hydrogen Cyanide | 100 | 1 | M080-0010-000 |
| O3 Ozone | 1 | 0.02 | M080-0007-000 |
| HCI Hydrogen Chroride | 15 | 0.1 | M080-0012-000 |
| CH3SH Methyl Mercaptan | 10 | 0.1 | M080-0016-000 |
| C2H4O Acetaldehyde | 20 | 0.1 | M080-0044-000 |