ECO-SURE (2E) Carbon Monoxide (CO) Gas Sensor Description ECO-SURE (2E) Carbon Monoxide Sensor, 2 Electrode, long life sensor designed for residential, fire detection and ventilation control applications. UL certified. ECO-SURE (2E) Carbon Monoxide (CO) Gas Sensor Features: * Long Life * Stable Performance * UL Certified - UL2075 ECO-SURE (2E) Carbon Monoxide (CO) Gas Sensor Applications: * Residential * Fire Detection * Ventilation Control ECO-SURE (2E) Carbon Monoxide (CO) Gas Sensor Technical Specifications * Operating Principle: 2-electrode electrochemical * Measurement Range: 0-500 ppm CO * Maximum Overload: 1000 ppm CO * Sensitivity: 45 ± 15 nA/ppm * Response Time (T90):