Amazon now offers the Level Bolt HomeKit Smart Lock for $140 shipped. Normally fetching $199, today’s offer lands as one of the best discounts of the year. It specifically undercuts Prime Day, with the $53 in savings today beating our previous mention by an extra $11. Standing out from all of the other models on the market, Level Bolt arrives as the Invisible Smart Lock thanks to its in-door design that hides all of the motorized deadbolt features out of sight. Most other offerings have large casings or housings that hang off the back of your door, but Level Bolt looks to keep the install looking as though it’s still traditional hardware. That unique design pairs with support for a variety of smart home features headlined by HomeKit integration on top of Ring, using a smartphone app, or just pulling out the old school key. We found it lived up to the novelty in our hands-on review. Head below for more.