Smoke alarm: highly sensitive 6 seconds alarmStable and reliable High sensitivity: Specially designed light sensor, produced by patch processing technology, can effectively detect the smoke generated during the initial flame retardant stage of fire or after generationhighly environmentally friendly material, high temperature resistant and not easy to burn, beautiful and practicalHigh-decibel loudspeaker Long life span: Using imported magnetic loudspeaker, the sound is twice as common as normal smoke, which is deafeningHighly sensitive smoke sensor: used independently, when the smoke sensor a certain amount of smoke concentration, the smoke sensor emits an alarm sound, alarming 90 decibelsSquare battery: 6F22Quiescent current:Less than or equal to 10uAAlarm current: Less than or equal to 10mAAlarm sound: greater or equal to 85dBWorking temperature: -10~50 CelsiusRelative humidity: Less than or equal to 95%RHcolour:whitematerial:ABSsize:102x102x40mmPackage Contents:1*Smoke detectorOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.