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Power Supply: DC 9V battery operated Sensitivity to co: conforms to EN50291standard. Sensitivity to smoke: comply to EN14604 standard. Standby Current: 50A Alarm Current: 20mA Operation Ambient Condition: 4 38 25 85 R.H. CO: electrochemical sensor Smoke: photoelectric sensor Battery Package: Carbon Zinc 6F22 or Alkaline 6Lr61 1604A for ANSI 6AM6 for JIS. Alarm sound : 85DB at 100cm at 3.40.5KHz pulsing alarm. smoke alarm sound pattern: BI 0.5s-pause 0.5s-BI 0.5s-pause 0.5s-BI 0.5s-pause 1.5s repeat this alarm pattern. CO alarm sound pattern: 4 short beeps-followed by 5 seconds of silence-followed by 4 short beeps.
