Type:AHH-2 1.Ceiling or wall mounting 2.Easy installation 3.12VDC, 24VDC, 9V battery operated (included) 4.Detection of intense fires with fast response and the temperature. 5.Flash alarm indicator (red) 6.Safety-clip feature, not allow mounting of the heat alarm without battery installed 7.High stability and reliability 8.Relative Humidity: 10% ~ 95% 9.Operating Current: <30uA (standby) and 30mA (alarm working) 10.Horn level: 85dB within 3 meter 11.Operation: When the ambient temperature rise 70centigrade degree(or 60centigrade degree or 80centigrade degree)within 5 seconds, the alarm will sound. 12.Temperature Standard 70 centigrade degree. (Can be adjusted for special location and customer request. )