... 10uACurrent: DC4.5V (transmission/Receiver3X1.5V battery)DC9V (smoke testingWorking voltage:Technical Data:Size: 126X47mmSolid Connections And ... contact with us for more information of this smoke detector, welcome to establish business relationship with our ... air quality related products, our main products cover smoke detectors (smoke alarm), heat detectors (heat alarm), carbon monoxide detectors ...