Photoelectric Smoke Detector, Model: AH-0311 - Special chamber design has greatly decreased dust levels and improved detection accuracy. - Dual LEDs for 360 degree visibility - Low current consumption SPECIFICATION Voltage range : 12 ~ 30V DC Standby current: 35 µA Alarm current: 40 mA Ambient Temperature: - 10ºC ~ +55ºC Weight: 155g Color: white