What's better? Mechanical code lock or electronic system?
Keyless Mechanical Combination Door Lock Digital Code Keypad Security Entry Door Stainless Steel 304 Not Deadbolt (Only for The Left Handed Door Opens Inward) … (Right Handle) - - Amazon.com
Codelocks-CL100 Mechanical Codelock with Surface Deadbolt
RS PRO | Metal Mechanical Code Lock | 754-0912 | RS Components
Mechanical Keyless Door Locks | GoKeyless
LFKQ4040X1L FREE VINCI - Mechanical Code Lock
Mechanical Push Button Key Code Operated Deadlock
Codelocks Inc | Mechanical, Electronic and Locker Locks
All-Weather Double Keypad Mechanical Keyless Latch Door Lock (Satin Chrome) by Code-a-Key - - Amazon.com
Buy YYjop Mechanical Door Lock, Mechanical Code Lock, Keyless Entry Lock Set Latch Lock 2-3/8 inch and 2-3/4 inch,Suitable for Garage/Hotel/Office/Studio/Warehouse/File Archives Online in Turkey. B094MTXKVV
digital mechanical code lock/ deadbolt locks from China manufacturer - Ningbo Yosec Industrial Co., Ltd.