Anti-theft siren for power line and transformer

The utility model relates to an anti-theft alarm for power lines and transformers, composed of a control return circuit, an error resistant circuit, an alarm circuit and a packaging outer shell. The utility model has the advantages of simple structure, complete function, high sensitivity, high safety, etc. The power failure does not alarm by error. The utility model is suitable for rural power networks. The utility model prevents the transformer and lines from theft. The utility model can be also used for anti-theft of doors and windows, fish ponds, orchards, etc.