We stock 25 SwitchBot devices. Every price below is read live from our catalogue and shown in your local currency at checkout. We ship from Hong Kong to Singapore, the UK and Australia; all devices are battery or 100–240V, so no voltage converter is needed.
1. Smart locks: what "retrofit" actually means
A retrofit lock does not replace your lock body. It sits over the existing thumb-turn on the inside of the door and rotates it. That means the outside of your door is unchanged — your existing key still works — and nothing needs to be drilled or wired.
| Check | Why it decides everything |
|---|---|
| Cylinder type | Euro-profile, deadbolt and rim cylinders need different adapters. Euro-profile is standard in the UK, SG and AU apartments |
| Door thickness | The clamp has a supported range; too thin or too thick will not seat |
| Thumb-turn shape | Round, oval or lever — the adapter kit has to match |
| Door swing direction | Affects which side the unit mounts on |
| Gap behind the door | Needs clearance for the unit body |
2. Locks and keypads we stock
| Model | Price | Notes |
|---|---|---|
| SwitchBot Smart Lock Ultra Smart Lock Ultra [HK Official] | 1280 | The lock on its own, if you already have a keypad |
| SwitchBot Keypad Vision Pro Vision ProKeypad -// | 920 | Palm vein, face, fingerprint and PIN |
3. Choosing a keypad
| Keypad | Unlock methods | Best for |
|---|---|---|
| Keypad Vision Pro | Palm vein, face, fingerprint, PIN | Hands-full entry, families, anyone who forgets codes |
| Keypad Touch | Fingerprint, PIN | Simpler and cheaper; one or two users |
| No keypad | App and auto-unlock only | Single occupant who always carries a phone |
Palm vein is not a gimmick: it works with wet or gloved hands and does not leave a fingerprint smudge on the reader. For a family with children it is the most forgiving option.
4. Curtain robots: the rail type is the whole decision
This is the single most common ordering mistake. SwitchBot curtain robots come in I-rail and U-rail versions, and they are not interchangeable. Look at your rail before you buy:
| Rail type | What it looks like | Which model |
|---|---|---|
| I-rail (I-rail) | A plain track with no returns at the ends — the most common type in HK, SG and UK rentals | Curtain 3 I-rail |
| U-rail | A track with a U-shaped channel or returns at both ends | Curtain 3 U-rail |
| Rod (no track) | A round pole rather than a track | Needs a different product — not covered here |
| Model | Price | Notes |
|---|---|---|
| SWITCHBOT Curtain 3 Curtain 3 Smart Curtain I-rail(I-rail) M2K-SBCU | 550 | I-rail version |
| SWITCHBOT Curtain 3 Curtain 3 Smart Curtain U U-rail M2K-SBCU3-U [ | 550 | U-rail version |
| SwitchBot Curtain 2 Curtain Robot(Single pack) - HK Official | 350 | Previous generation, cheaper |
Check two more things: the maximum load the robot can pull (heavy blackout curtains are the usual failure) and whether your rail has a centre overlap — for a two-panel window you need one robot per side, not one robot for both.
5. Do you need a hub?
| Setup | Works without hub? | Limitation |
|---|---|---|
| Lock only, phone nearby | Yes (Bluetooth) | No remote unlock, no voice control |
| Lock + keypad | Yes | Keypad talks to the lock directly |
| Lock + automation ("unlock turns on the light") | No | Needs a hub |
| Curtain + schedule | Partially | The robot stores simple schedules; a hub adds sunrise/sunset and remote control |
| More than two devices | Practically no | Managing several Bluetooth devices individually gets old fast |
| Hub | Price | Notes |
|---|---|---|
| SWITCHBOT Hub Mini Hub Mini [HK Official] | 219 | Entry level, IR blaster |
| SwitchBot Hub 2 Smart Hub [HK Official] | 530 | Adds temperature and humidity sensing |
| SwitchBot Hub 3 Smart Hub 3 - HK Official | 780 | Matter support and Ethernet |
| SwitchBot AI Hub AI Hub [HK Official] | 1780 | Largest device count, on-device processing |
6. Renting: what to check before installing
| Question | Why it matters |
|---|---|
| Does your tenancy allow hardware on the door? | Most allow removable fittings; some prohibit any modification |
| Is the lock on the front door shared with neighbours? | A shared entrance lock is usually not yours to change |
| Can you restore the original state on move-out? | Retrofit locks come off cleanly — keep the adapter kit and screws |
| Does your building have a master key system? | Some buildings prohibit tenant lock changes entirely |
Because nothing is drilled and the original key still works, a retrofit lock is usually acceptable — but the tenancy agreement is the document that decides, not the product design. Check it first.
7. Shipping, warranty and app region
| Item | Singapore | United Kingdom | Australia |
|---|---|---|---|
| Delivery | 5–9 working days | 6–10 working days | 7–12 working days |
| Warranty | Return to Hong Kong | Same | Same |
| Return freight | Buyer pays, HK$150–350 | Same | Same |
| Plug type (mains devices) | Type G | Type G | Type I |
Locks, keypads and curtain robots are battery powered, so plug type does not apply to them. It matters for the hubs, which use USB-C power supplies — a UK Type G supply works in Singapore, and Australia needs a Type I adapter.
8. Common questions
Will a retrofit lock work on my door?
Only if the cylinder type, thumb-turn shape and door thickness all match. Measure and photograph before ordering.
Can I still use my original key?
Yes. The outside of the door is untouched; the retrofit unit sits on the inside.
What happens if the battery dies?
You keep your original key as the fallback. Check the app battery level monthly.
Curtain robot or a motorised track?
A robot is far cheaper and removable; a motorised track is quieter and neater but needs installation and wiring.
Can one robot open a two-panel window?
No — one robot pulls one panel. Two-panel windows need two robots.
Does it work with Apple Home?
Hub 3 and AI Hub support Matter, which brings devices into Apple Home, Google Home and Alexa. Older hubs use the SwitchBot app only.
Will the lock work if the internet is down?
Yes — Bluetooth and the keypad keep working locally. Remote unlock and cloud automations stop.