Door Reinforcement Lock with Lockable Feature, Extra Heavy Duty Version, Prevent Kick-ins or Unauthorized Exit, for Child Safety, Security Lock Inside for Front Door/Bedroom (1 Pack)

About this item

1. Offers Two Locking Methods: 1. Keyless: Simply slide the knob up or down to lock or unlock quickly and easily, no key required. 2. Key Required: Press the cylinder to fully lock the device; a key is then necessary for unlocking. Choose the locking method that best suits your security needs.
2. Enhanced Security & Access Control: Installs on inward-swinging door frames to prevent the door from being forced open externally (kicked, bumped, pried) or opened from the inside. Compared to traditional home security door locks, it provides an additional locking function. Once engaged, a key is required to unlock, helping prevent children or individuals with dementia from wandering out, ensuring their safety. If you don't need the additional locking function, you can simply slide the knob to lock and unlock without a key.
3. Heavy-Duty Zinc Alloy Construction: Constructed from extra heavy-duty cast zinc alloy, weighing approximately 14oz. The increased material weight raises the product's deformation threshold, enabling it to withstand greater impact forces than traditional products and significantly enhancing security.
4. Adaptable Installation: Simple installation with included short and long screws. For basic security needs, use the 1.5-inch phillips screws for quick and easy mounting. For higher security demands, use the 3-inch plus 1-inch Torx screws; the 3-inch screws penetrate deep into the door frame for a significantly stronger, more secure hold.
5. Replaceable Buffer/Spacer Shim. Thin and thick buffers are included, and you can choose the appropriate buffer for installation according to the size of the gap.