CYSLMUK 2Pack Security Door Restrictor Steel Window Guard Lock Entry Door Without Chain Locking Latch for Window Door, Prevents Break-in

The door security chain locks are designed to identify callers and prevent forced entry before the door is fully opened; Allows doors to open about 30-50mm, providing excellent external security; The heavy-duty steel construction makes it exceptionally strong and prevents violent break-ins to maintain security; Silver; No drilling or chiseling is required for installation. Once installed, it cannot be unlocked from the outside. The security locks provide reliable protection for doors, storage rooms, windows, etc. in hotels and hotels.