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Fifth way wireless burglar alarm system (FDD5/JDD5) circuit

2016-11-13 00:36  
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Fifth way wireless burglar alarm system (FDD5/JDD5) circuit diagram
The picture(a) shows the code transmission circuit. FDD5 has set the digital coding circuit. It can be pre-encoded by encoder circuit, in use. As long as the connected components get power, it will automatically launch the emission signal. The picture(b) shows the remote control receiver decoding circuitry. JDD5 also integrated within the decoding circuit VD5027.