This is Door Magnetic Lock with 500kg Holding Force that by attaching the electromagnet to the door frame and the armature plate to the door, a current passing through the electromagnet attracts the armature plate holding the door shut.
This is Door Magnetic Lock with 500kg Holding Force that by attaching the electromagnet to the door frame and the armature plate to the door, a current passing through the electromagnet attracts the armature plate holding the door shut.
