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Black-And-White Wall Hanging Visible Doorbell Circuit

2014-11-25 10:07  
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Black-And-White Wall Hanging Visible Doorbell Circuit
Black-And-White Wall Hanging Visible Doorbell Circuit
Black-And-White Wall Hanging Visible Doorbell Circuit
As the people's life level in our country is higher than before, some home security products have entered the house gradually. And the visible doorbell's price is going from the original thounds yuan per set to now hundreds yuan per set. It enters the home with geometric popularizes speed.The home installing the visible doorbell's purpose is to enhance the security. If adding a electromagnetic locks and automatic door closer, the user could enjoy the modern life that control the door to open or close without going out.To assemble a visible doorbell by yourself, it needs the following elements: a 38x35 standard size black-and-white camera, a 4-inch black-and-white display module, outdoor device and indoor device and 18V power case which are totally three sets, two control circuit boards, one power board, several electronic elements, one set of colourful product outer packing. The optional component is listed here: a electric control lock, a automatic door closer.