Specification:- Voltage & Current : DC12V 0.43A- Stroke & Force : 4mm, 80g- Action Type: Push Pull- Energized Forms: Intermittent- Lock Tongue Size: 10 x 5 x 8mm / 0.39 x 0.2 x 0.31 inch (L*W*H)- Body Size: 20 x 16 x 13mm / 0.79 x 0.63 x 0.51 inch (L*W*H)- Package Content : 1 x Electromagnet Solenoid Lock Instructions for Use: - When the circuits is charged, the lock tongue will pull back by 4mm and the door will be unlocked.- After the circuits is powered off, the lock tongue will extend to lock the door.- The red and black wires are the power cords of the electromagnetic lock, and the positive and negative electrodes are not distinguished.- When it has been connected the wire and the current is available, the electric lock can control door's opening and closing.