Smoke and Heat Compatiable Detector Description: - Photoelectric sensor - Pwoer supply can use two type of 9V battery and DC 12V together - If connected power DC12V, the power 9V battery will stop working - If DC12V off power, the 9V bettery as back battery keep to work continuously - Alarm temperature for heat sensor: adjustable(Max.58degrees) - Red LED indicate alarm - Low battery alarm -...Smoke and Heat Compatiable Detector Description: - Photoelectric sensor - Pwoer...