600LBs/280KG Electric Magnetic Lock, Electromagnetic Door Lock Holding Force for Access Control, OutSwinging Door Access Control System, Single Door 12V

Works great, strong bond!

Purchased it and installed it with Unifi access, power provided by the Unifi access hub. It works without any issues.

This Lock is Amazing! I've used several of them in different jobs and all of them are still working perfect! Worth every penny!

The only issue is that when the door is open , the beep is super annoying.

Working as it should. Few things to keep in mind:First, even the slightest separation between magnet and metal will substantially reduce the force of attraction. A thin layer of plastic (plastic wrap!) drops the holding force by about 50% to 75%.Second, if you are using a thinner metal than the one provided the force of attraction will be reduced. How much will depend on the thickness of the metal.So, if the electromagnet is in contact with a 1/4” iron plate it’s almost impossible to pull them apart.

I put this lock on my door and it does “lock” but anything more than 10% effort opens the door. It is 100% not a 600lb rating. I have one already and it’s not physically possible to open by hand/force. Waste of $30 .. knew it was too good to be true. The slots for the mounting bracket are also too small for raul plugs so finding a screw that fits happily inside (small hole means small screw which means WEAK!) even if it had a 600lb rating, the screws would probably rip off first.

So I had a separate idea / project from what this is intended for.No wasnt securing a perimeter door - rather I made something else... that required I cut with a metal grinder the bar it came with...Long story short - the magnet is strong holding TWO pieces (from the original 1 bar) together and the circuit is straight forward to wire up.Great value and kit you get back!

This isn't strong electromagnet I will give it that. Although keep in mind this thing needs to be almost perfectly lined up and really can be a pain in the ass. If you're set up is somewhat custom, I'm sure it works great for doors that fit perfectly and everything is ready to go. But if you're or not completely flush using factory milled materials which come together flawlessly, you may not be happy with this magnet as it's caused me more grief than benefit. It finally gave up the ghost after a long time of use and abuse and as I said it was a strong magnet and while it worked was good. However, I can't recommend it based on the fact you're probably better off with a solenoid latch or something else as magnet locks can really be difficult. I understand their views quite heavily in security doors and that the concept is highly understandable and preferred. However, these things can cause many issues. I mean what if your primary power goes and your battery is not holding adequate charge. Your door is open. That doesn't sound very secure to me now. Of course battery backup should be employed and in many times it is. But what if it fails? What if your backup battery is not holding a charge or simply has a loose connection? That's why for high security I would say a latching solenoid deadbolt lock would be highly Superior to this. MarkMannM2