
Please read this first. " @The speaker is not inclued because it is not allowed to ship by airplane "
Technical information.
• A “ding-dong” musical alarm to provide warning of Intruder.
• It can be installed at gate or shop door to detect the visitor.
• This circuit requires 4.5volt current (battery 1.5 volt 3 units).
• PCB dimensions : 2.7” X 1.6”