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2-17-21Updated review. Initially the magnet was letting go after some time as you can see from my email below. After some experimenting I removed the wiring for the release button and the magnet worked as expected. Must be an issue with the release button. I am going to rewire it and if need be use the wireless keyfobs. So far though so good.
Installed this on a hidden door for a secret room. Install like everyone said else was cumbersome and with poor directions. Being a contractor I figured it out. Everything works and have a second button installed as well. The only real issue is that after the door locks and I walk away, when I return hours later for some reason the magnet has released. It did this for days. Being a brand new house I know all of the electrical works and even installed a backup battery so that power would not be lost and the magnet release. That did not help any. So now I have a secret room with a door that will not remain shut and I can't figure out why.