... Technology Specifications 1,Self-testing anytime;2, Alarm memory & query record function;3, LCD display ... Button with 3 LEDS 7. Low Battery alarm (alarm,LCD display $ LED indication)8, Can ... 11. CO Sensitivity meets EN50291 or UL2034;12. Alarm Sound Level: >85dB at 10 feet (3m);13 ... Current6uAAlarm Current23mAAlarm Sound Level85 decibels at 3 m Response TimesEN50291:At 50 ppm, unit must alarm within ...