These are the Iris 3320-L v2 Contact sensors... I have a few around the house and they work great. No issues so far. I bought some magnets on ebay as well, and use 3M COmmand Strips to mount both parts.
These are the Iris 3320-L v2 Contact sensors... I have a few around the house and they work great. No issues so far. I bought some magnets on ebay as well, and use 3M COmmand Strips to mount both parts.