| Ammonia (NH3) Combustible Fixed Gas Detector (0-100ppm) | co2meter.com | 2190 USD | — | — |
| Oxygen (O2) Combustible Fixed Gas Detector (0-25%) | co2meter.com | 2079 USD | — | — |
| Carbon Dioxide (CO2) Combustible Fixed Gas Detector (0-5000ppm) | co2meter.com | 2009 USD | — | — |
| Industrial Stainless Steel CO2 Gas Detector | co2meter.com | 1889 USD | — | — |
| Industrial Stainless Steel O2 Gas Detector | co2meter.com | 1889 USD | — | — |
| Carbon Dioxide and Oxygen Welding Gas Analyzer | co2meter.com | 1666 USD | — | — |
| Nitrogen Dioxide (NO2) Combustible Fixed Gas Detector (0-100ppm) | co2meter.com | 1629 USD | — | — |
| Hydrogen (H2) Combustible Fixed Gas Detector (0-1000ppm) | co2meter.com | 1629 USD | — | — |
| Hydrogen Sulfide (H2S) Combustible Fixed Gas Detector (0-100ppm) | co2meter.com | 1629 USD | — | — |
| Carbon Monoxide (CO) Combustible Fixed Gas Detector (0-150ppm) | co2meter.com | 1589 USD | — | — |
| O2 Industrial Gas Detector | co2meter.com | 1439 USD | — | — |
| CO2 Industrial Gas Detector | co2meter.com | 1439 USD | — | — |
| Methane (CH4) Combustible Fixed Gas Detector (0-100% LEL) | co2meter.com | 1329 USD | — | — |
| Propane (C3H8) Combustible Fixed Gas Detector (0-100% LEL) | co2meter.com | 1329 USD | — | — |
| Portable CO2 Welding Gas Analyzer | co2meter.com | 1299 USD | — | — |
| CO2 Meter RAD-0502 CO2 Controller for Grow Rooms | regulatorsupply.com | 699 USD | — | — |
| CO2 Meter RAD-0102-6 Remote Storage Safety 3 Alarm | regulatorsupply.com | 695 USD | — | — |
| CO2 Meter RAD-0102-6 Remote Storage Safety 3 Alarm | shop.cksupply.com | 695 USD | — | — |
| CO2 Meter SAN-13 CO2 Leak Detector | shop.cksupply.com | 649 USD | — | — |
| PM3006s Outdoor Air Quality High Performance PM Sensor | co2meter.com | 550 USD | — | — |
| Solenoid Shut Off Valve with Wiring | co2meter.com | 449 USD | — | — |
| PRO-10: Portable 5% CO2 Safety Detector | regulatorsupply.com | 399.99 USD | — | — |
| Personal 5% CO2 Safety Monitor and Data Logger | shop.cksupply.com | 399 USD | — | — |
| CO2 Meter RAD-0502 CO2 Controller for Grow Rooms | shop.cksupply.com | 399 USD | — | — |
| CO2, Temp, and RH Indoor Air Quality Monitor | co2meter.com | 395 USD | — | — |
| CO2 Meter GasLab Plus CM-501 Handheld Gas Detector | regulatorsupply.com | 349 USD | — | — |
| CO2 Meter GasLab Plus CM-501 Handheld Gas Detector | shop.cksupply.com | 349 USD | — | — |
| Space Hub: WiFi Gateway for Indoor Air Quality Monitors | co2meter.com | 275 USD | — | — |
| Cubic 100% Methane Sensor | co2meter.com | 275 USD | — | — |
| SJH-5A Cubic 5% Methane Sensor | co2meter.com | 275 USD | — | — |
| Solenoid Shut Off Valve - 1/2 inch | co2meter.com | 249 USD | — | — |
| Gas Sensor Development Kit | co2meter.com | 220.64 USD | — | — |
| Industrial Strobe Siren | co2meter.com | 197 USD | — | — |
| CO2 Controller for Grow Rooms | co2meter.com | 159 USD | — | — |
| Space CO2 Mini: Indoor Air Quality Monitor 4-Pack | co2meter.com | 152 USD | — | — |
| Indoor Air Quality CO2 Monitor | co2meter.com | 149 USD | — | — |
| TecMicro 0-100% Oxygen O2 Sensors | co2meter.com | 144 USD | — | — |
| AM4203-FC A2L Refrigerant Leak Detection Sensor | co2meter.com | 125 USD | — | — |
| AM1008W CO2, PM, Temp, RH, and VOC Sensor | co2meter.com | 121 USD | — | — |
| AM4205H-LC-R32 Cubic R32 A2L Refrigerant Gas Sensor | co2meter.com | 97 USD | — | — |