H2S is a toxic gas that can lead to death when critical levels are reached. The Health and Safety Authority limits for H2S exposure are just 5 and 10ppm. Protection and monitoring are available from our range of portable gas monitors – either single or multi-gas versions. Our Crowcon Clip is a low cost handheld Hydrogen Sulphide monitor. Reliable and durable fixed life monitoring in a compact and maintenance-free package, the Crowcon Clip has a 2-year life. No service or calibration required. Our H2S gas meter alarms at recognised dangerous levels to protect you from toxic gas exposure. For mulitgas options see our T4.