Carbon Monoxide Accessory for Digital Multimeters

The A771 is an advanced state-of-the-art Carbon Monoxide monitor that may be used to measure levels of carbon monoxide (CO) in th part per million (ppm) range when used with a digital multimeter (DMM). The instrument has both audible and visual alarms when CO has reached the preset level. This unit may be operated as an alarm only personal monitor. NOTE: The product may be used with any DMM capable of measuring 2-4 volts DC. The signal output is 1 mV DC = 1 ppm CO. The A771 uses and advanced electrochemical sensor that measures Carbon Monoxide only. A built-in filter reduces most cross-sensitivity to other gases. This product should be used with DMM’s with greater than or equal to 10 megaohm impedance.