FIELDPIECE Carbon Monoxide Detector SCM4 VIC ROADS COMPLIANT This FIELDPIECE SCM4, Carbon Monoxide Detector has a very fast reaction time, and measures CO in parts per million (ppm). Its electrochemical sensor is fast enough for walk-around tests. Features and benefits include: Ideal for automotive workshops and underground carparks Easy to install Fast and Easy Sensor Replacement (Part # RCM4)* Comes pre-calibrated & certified Alarm rate increases as carbon monoxide concentration increases MAX hold to help you zero in on the source Auto Power Off (APO) to save battery life (easy to disable) Battery check with % of battery life left displayed Advanced three-pin sensor measures 0 to 1000 ppm CO Calibrate / Zero SCM4 to ambient quickly with the ZERO button Audio and visual alarms with mute function Bright-blue, backlit dual-display with MAX and real-time measurements displayed Magnetic hanger for hands-free operation Specifications Sensor type: Electrochemical (specific to CO) Sensor calibration: Factory calibrated @ 17ppm CO and 200ppm CO Range: 0 to 1000 ppm; 0 to 2000 ppm (less than 5 minute exposure time) Initial accuracy: @ 73°F±9°F,