I am building a radio controlled open/close electrical opener/closer (lock when close) and I have been trying to think of the mechanical scheme for this. Should I use a solenoid or an electromagnet? When it is high the magnet will attract, and when low the magnet will repel.
And a solenoid would just have one way (open)
So is there a product similar to the magnet I mentioned, and cheap?
Edit: this is a light door, a minifridge, but requires a strong magnet or solenoid to lock and stay locked similar to a deadbolt, aside from the fact that deadbolts dont open the door, just unlock them.