The best state-of-the-art cat doors available. Positive magnetic seal and tinted flap for weatherproof access. Manual rotating deadbolt secures door from inside for full-closed, in-only, out-only, or two-way operation. Available with standard magnetic lock or programmable battery-powered locks. Magnetic 4-way locking door especially designed for cats provides extra security by restricting entry to cats wearing magnetic collar keys. Helps keep strays and other animals out of the house.