Review on 🔒 Magnetic Switch Normally Closed Security: Safeguard Your Space with Enhanced Sensing Technology by Lawrence Allison

Is it a language problem or is it more the Chinese? Clamps are marked FALSE. The terminal marked "NC" is normally open (the reed switch does not conduct without a magnet), the terminal marked "NO" is normally closed (the reed switch operates without a magnet). Another problem is that they have square washers on the clamps that are too small and turn uselessly in the associated channel. Also, I'm giving it two stars because they have powerful magnets that allow them to activate when the magnet is >1/4" from the relay. But actually the manufacturer and other users didn't catch that idiotic marking. Good that I tested them on the workbench before installing them. .