Door lock / safety lock No name model Czę000041 — mechanical child safety device for household doors

Mechanical door safety lock No name model Czę000041 is a compact, non-electronic device designed to provide a simple physical barrier on household interior doors. The unit is intended to restrict door opening by children or unauthorized persons and is suitable for a range of standard door types where a small mechanical lock is preferred. Installation does not require electrical power and the mechanism operates by a manual latch action to block the door from opening.

Advantages

The design is compact and straightforward, offering a mechanical safety solution without batteries or wiring. Its manual latch mechanism is easy to operate for adults while remaining effective at preventing unintended access. The device is suitable for retrofitting to existing doors and does not rely on electronic components, which minimizes maintenance needs. Materials and construction provide a stable, low-profile barrier for interior household use.

Suitable for

• Homes with young children where accidental door opening should be prevented
• Interior rooms that require occasional access control, such as storage rooms or home offices
• Rental properties or shared apartments where a simple, removable lock is needed

Key specifications

• Type: mechanical child safety door lock
• Application: interior household doors
• Power: none (manual operation)
• Installation: surface-mounted to door and frame or to door leaf depending on fit
• Operation: manual latch mechanism providing a physical blocking action
• Design: compact, low-profile housing suitable for retrofit installation

How to use

Mount the lock on the door and corresponding frame or on the door leaf following the alignment of the latch with the strike plate. Ensure the device is positioned so the latch fully engages when the door is closed. To operate, move the latch into the locked position to prevent the door from opening and release the latch to allow normal use. Check mounting screws periodically to confirm the device remains securely attached and that the latch engages smoothly.

Usage recommendations

Use this mechanical safety lock on interior doors where a simple, non-electronic child safety solution is required. Verify compatibility with door thickness and frame profile before installation. Avoid using on external doors or where fire-safety regulations require unobstructed egress. For continued reliability, inspect the device regularly and tighten fasteners if needed.