Phone Pickup Suction Cup Electronic Kits
No electrical connection to the telephone is required, attach a suction cup to the hand set an turn on the amplifier. This project permits group listening to phone calls. You can also use it to monitor any other oscillating electrical field. Dual IC's provide a good quality amplifier, the circuit runs on 6 volts DC. Everything included except the batteries Specifications:
Phone Pickup Suction Cup Electronic Kits Reviews:
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