Frequently Asked Questions
Have Questions? We're Here to Help You.
Whether you need a letterbox lock for an HDB flat or a digital lock for letterbox in a condo, our design delivers low-maintenance, high-security performance. Say goodbye to keys, batteries, and bulky hardware—upgrade today for seamless mail protection.
The lock ships with a default code of 0-0-0.
- Ensure the lock is open (default code is 0-0-0).
- Find the pin hole on the side of the front lock turntable.
- Insert a pointed tool (e.g., SIM-tray pin) into the hole and hold.
- If it does not give, turn the knob slightly and retry.
- While holding, set your new 3-digit code and release to confirm.
Yes—our dimensions match standard HDB mailbox lock cutouts.
We recommend our $80 installation package for perfect alignment and warranty coverage.
No—being battery-free and fully mechanical, it only needs occasional cleaning for optimal performance.
Being a battery-free letterbox lock, we do not need any batteries to be used. Saves your hassle and your time.
