Single-Gas Monitors feature audible and visual alarms as well as an internal vibrating alarm. They can easily be clipped to your belt, shirt pocket or hard hat. Detect either H2S or CO.
One-button, automatic calibration. High and low alarms. Peak hold feature stores the highest reading from initial turn-on. One AA alkaline battery gives you an approximate run time of up to 500 hours. Case is constructed of high-visibility, impact-resistant composite and features radio frequency interference (RFI) protection. Monitors measure 3.375"H x 2.3"W x 0.75"D and weigh 3.5 oz.