No-miss triple alarm system includes bright flashing LEDs, piercing audible alarm, and an internal vibrating alarm;Automatically records the last 50 alarm/test events while simultaneously recording peak gas readings or low O2readings every three minutes in a periodic data log;Adjustable alarm set points;Rubberized armor housing and one-button operation for maximum durability and simplicity;Easy alarm check, bump check, fresh air zero, and calibration. Easily replaceable batteries and sensors

• MSA 10076729 ALTAIR PRO Single Gas Detector, Hydrogen Cyanide (HCN), Low Alarm 4.5 PPM, High Alarm 10 PPM

MSA 10076729 ALTAIR PRO Single Gas Detector, Hydrogen Cyanide (HCN), Low Alarm 4.5 PPM, High Alarm 10 PPMMSA