The holder, which looks to all appearances like the business end of a car seatbelt's clasp & buckle, mounts to any indoor wall with included screws.
Mount the main part of the device (the part with the red pushbutton) facing downwards, then add your keys to the ring attached to the other half.
Ready to hang up your keys for the night? Simply insert the metal tab into the buckle until you hear that familiar "clock-snap" sound. On your way out? Push the red button and your keychain - and you - are good to go!
