Keyhole Hangers

Both the indoor unit and outdoor sensors feature keyhole slots and Built-in hanger for easy and secure mounting What We Don't Like

I've goggled this Keyhole Hanger and all I can find is two screw hangers Keyhole Slot Router Bit By Stephen50 in forum

keyhole slot dimensions Comments5 · how to install a Keyhole Wall Hanger to hang your DIY projects or picture

keyhole slot bit Each test slug should only take about 10 minutes to print Tags wall frame picture hanger mount + More Model origin The author hasn't provided the model