Incorporates proven XCell® sensor technology Enhances worker safety, compliance and traceability End-of-sensor-life warning and alarm Records 75 alarm events 150+ hours of periodic data Compatible with MSA Galaxy® GX2 Automated Test System and MSA Link Pro software Tough over-molded rubber armor Survives multiple 25-ft drops onto concrete Intrinsically-safe design No-miss triple alarm system includes bright flashing LEDs, piercing audible alarm, and an internal vibrating alarm Large character, monochrome LCD display One-handed, one-button configuration Colour Charcoal Grey Dimensions 3.5"" L x 2.125"" W x 1.25"" D Extended Temperature Range -20°C - 50°C Extreme Temperature Range -40°C - 60°C Ingress Protection IP67 No. of Detectable Gases Single Weight 4 oz.