Features:

• Gas concentration display
• Replaceable sensor and battery
• Simplified autocalibration at the push of a button
• Large display that is easy to read, even in low-light conditions
• Durable design that withstands severe conditions and usage
• Excellent resistance to water and dust penetration; IP54 rating
• Replaceable, long-life, 123-type lithium battery that powers unit for over 1 year
• Patented leak-proof, stainless steel button sensors that are easy to replace
• Triple alarm system features piercing audio, quadruple ultra-bright visual and optional vibrating alarms
• Strong, versatile clip designs that keep unit attached during the roughest use