Digital vs combination letterbox lock
Both are keyless. The difference is battery, speed and where your mailbox is.
Updated
Side by side
| Digital (touch PIN) | Combination (dials) | |
|---|---|---|
| Battery | Coin battery, with warning | None |
| Speed | Fast, works in dim light | Turn each dial |
| Code length | P4: 4–14 digits | 3 or 4 digits |
| Outdoor / rain | Not recommended | Zinc-alloy models suit |
| From | S$60 | S$50 |
FAQ
Digital letterbox lock or combination lock: which should I choose?
A digital touch-PIN lock is quicker in a dim corridor and accepts a longer PIN, but it runs on a coin battery. A mechanical combination lock never needs a battery, so it suits anyone who wants to fit it and forget it, and it is the better choice for mailboxes exposed to rain. Seven of our nine models are battery-free.
Is there a letterbox lock that does not need a battery?
Yes, most of our range. The combination models P2, P3, P5, P6, P8 and P9, plus the keyed P1, have no battery at all. Only the digital touch-PIN models P4 and P7 use a replaceable coin battery, and they warn you before it runs low.