The CMM5042 carbon monoxide sensor module is a new unit which utilizes TGS5042, Figaro's electrochemical CO sensor, a widely used model for residential and commercial CO detectors with excellent durability and long term stability. This module provides analog output voltage proportional to CO concentration. CMM5042 is capable of detecting sensor trouble. Customers can easily design CO detectors with the ready- to-use module. CMM5042 Carbon Monoxide (CO) Gas Sensor Module Features: * Ease of use * Linear analog output proportional to gas concentration * Maintenance free * Battery operable CMM5042 Carbon Monoxide (CO) Gas Sensor Module Applications: * Residential and commercial CO detectors * Ventilation control * CO monitor for gas boilers, kerosene heaters, etc.