LY-031 DC12V 1.8A Electromagnetic Lock Four Wire with Feedback Round Mouth Port

A heavier solenoid lock with a useful addition: two of its four wires provide status feedback, so your project knows whether the bolt actually moved rather than assuming it did. That closes the loop in access control, which is the difference between a lock that reports a fault and one that silently fails. At 1.8A it needs a solid 12V supply and a relay or MOSFET driver with a flyback diode across the coil, never a direct Arduino connection. Feedback contacts confirm actual lock state; Stronger action than lightweight cabinet solenoids; Round mouth port suits standard door installations; Suits RFID, keypad and fingerprint access systems