@electrictech09: Lock your door with a magnet. A reed switch, a BC547 transistor, resistors, an LED, a 12V relay, and a solenoid door lock. The hidden reed switch snaps shut only when your magnet keychain touches it — the relay clicks, the solenoid pulls the latch, and the door opens. Remove the magnet and it locks again. Nobody can see the sensor, nobody can pick it. 📌 Save this for your next secret-lock project. Key, keypad, or magnet — which lock would you trust? ↗️ Share this with someone who needs it. #doorlock #reedswitch #diyelectronics #magnet #security

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Wednesday 07 October 2026 13:20:37 GMT