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Dual control doppler effect and light socket controlled automatic door circuit using RD627

Circuit as shown. It consists of the Doppler effect sensor head, light control switch, one-shot, SCR control circuit, vocal music buck rectifier circuit and communication circuit. When a vehicle or pedestrian approached the door, security door will open automatically, but will also broadcast a melodious music.

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Dual control doppler effect and light socket controlled automatic door circuit using RD627