The Gas Trainer gives your trainees the hands on experience of using a typical 4-Gas meter without an actual hazard present. This training prop will allow you to simiulate LEL, Oxygen (O2), Hydrogen Sulfide (H2S) and Carbon Monoxide (CO). Instead of detecting actual gases, the GasTrainer reads the signals generated by GasSource emitters. The closer the trainee is to the GasSource emitter, the stronger the "gas" concentration. This will allow you to create HAZMAT scenarios without releasing any hazardous gases or depleting any sensors.