Tough, rugged single-sensor gas detector for consistent long-term protection. Low cost of ownership. IPX5/IPX7 rated protection against water ingress. Compact & rugged. One button operation. Large backlit display. Loud alarm (92dBA @ 1 foot). RFI immunity to 40 V/m. Top & front mounted bright LED. Available with built-in vibrating alarm. Available with rubber boot. Security beep. Runs on 2-AA alkaline batteries. Up to 4000 hours continuous operation. Current and Max gas readings. STEL and TWA readings.