DESC: The Safe-T-Alert Monoxide Alarm is built to the new UL 2034 standard for marine CO alarms. For improved protection, these alarms react twice as fast to hazardous CO levels as UL 1524 alarms, yet they still eliminate nuisance alarms caused by non-hazardous low levels of CO. The confirmation circuit double-checks the CO level and exposure time before sounding the alarm, to eliminate nuisance alarms cause by brief build-ups of CO, such as when an engine is being warmed up Instant reset silences the alarm while the affected area is ventilated and purges the sensor of all CO, again eliminating nuisance alarms during and after ventilation The Memory Scan TM feature stores the CO level that triggered the alarm to help service centers diagnosing and repairing life-threatening CO leaks The power miser feature uses only 60mA, saving precious battery power Surface-mount Measures 5.5''W x 3''H x 1.3''D