Crowcon Gas-Pro Intrinsically Safe Confined Space 4-Gas Detector, CO,H2S, O2, CH4. Compact, rugged, and marine-approved, the Crowcon Gas Pro MED Personal Gas Detector is a portable, professional-grade, methane, oxygen, carbon monoxide, and hydrogen sulphide monitor ideal for use in confined spaces. A top-mounted display ensures data is easy to read, while a compact, dust- and water-resistant design makes the Crowcon Gas Pro MED Personal Gas Detector suitable for use in rugged environments. Furthermore, it is fitted with an internal pump, which is activated with the flow plate, allowing it to be worn in pumped or diffusion modes and enabling easy pre-entry testing. Automatic fail-safe flow plate recognition also improves the ease of pre-entry testing. The Crowcon Gas Pro MED Personal Gas Detector offers Specific and Unique Pre-entry Check modes. Intuitive functionality and support for multiple languages ensure that the Crowcon Gas Pro MED Personal Gas Detector is simple-to-use, while bump and calibration reminders help you to work accurately and reliably. Finally, the Crowcon Gas Pro MED Personal Gas Detector is powered by a lithium-ion battery which provides over 14 hours of operating time from a 7.5-hour charge. Ergonomic and easy-to-use, the Crowcon Gas Pro MED Personal Gas Detector is a professional-grade, marine-approved multi-gas monitor.