Continuously monitor for carbon monoxide (CO) with the BAPI BA/420CO Series Carbon Monoxide Sensor. The unit is equipped with an on-board electrochemical sensor and provides a 4 to 20 mA output signal proportional to the carbon monoxide concentration detected. The BA/420CO features a rugged housing with mounting tabs for easy installation. An optional LCD display is available for local indication. Units are factory calibrated and ready for field installation and operation. The BA/420CO is designed to be used as part of a control system that helps to prevent the formation of a hazardous environment when properly installed and maintained. For more information on the proper application and use of this product please read 'Environmental Safety Devices' in our technical reference section.