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Quick Details Place of Origin: Guangdong, China (Mainland) Brand Name: other Usage: Auto Working voltage: 9V 6F22 battery Static current: ≤10 uA Working current: ≤ 15 mA Working temperature: -10°C~50°C Work Humidity: 95% RH Alarm sound: ≥ 85dB Unit Size: Dia.107*44 mm Life of Battery: more than 1 year Certificate: EN14604 & CE & RoHS Detecting area: 20 square meter Product DescriptionThis is standalone photoelectrical carbon monoxide alarm detector.It adopts low consumption technology,with voltage alarm function and testing funtion.This detector with 9V battery,LCD displa