TTLock Gateway Comparison: Which Gateway Family Do You Need?
TTLock gateways bridge a Bluetooth lock to Wi-Fi so it can be controlled and monitored remotely, and they are generally sold in a few families — often labelled things like G2, G3 or G4 by different resellers — that mainly differ in connectivity range, how many locks they can bridge at once, and physical design. Exact specifications vary by manufacturer and firmware batch, so always confirm the details on the specific seller's spec sheet before buying.
Short answer
There is no single official TTLock gateway sold under one universal spec — Sciener licenses the underlying gateway hardware and firmware to various brands, who then label and package it differently. In general, newer generations tend to offer better range, more simultaneous lock connections and sometimes 5GHz Wi-Fi support alongside 2.4GHz, but you should treat any specific generation label (G2/G3/G4 and similar) as a rough guide rather than a guarantee, and check the actual listing.
General differences between gateway generations
- Wi-Fi band support. Older or entry-level gateways commonly support only 2.4GHz Wi-Fi. Some newer models add 5GHz support — confirm this if your router broadcasts a combined or 5GHz-only network.
- Number of locks per gateway. Gateways generally support bridging multiple nearby locks at once, but the maximum count varies by model and firmware.
- Bluetooth range and antenna design. Physical form factor (plug-in vs free-standing, internal vs external antenna) affects how far the gateway reliably reaches a lock through walls and doors.
- Power source. Most are mains-powered via a plug or USB; a few smaller models are battery-powered, which trades convenience of placement for limited runtime.
- Firmware update cadence. Newer hardware generations are more likely to receive ongoing firmware support from the manufacturer.
General comparison by generation
| Generation (typical) | Wi-Fi | Typical use |
|---|---|---|
| Earlier/entry-level (often called G2) | 2.4GHz only, on most units | Single household with one or a few locks |
| Mid-range (often called G3) | 2.4GHz, sometimes improved range/antenna | Small properties, short-term rentals |
| Newer (often called G4 and similar) | 2.4GHz, with some models adding 5GHz | Multi-lock or larger coverage needs |
These labels are not standardised across every seller, so treat this table as a general pattern, not a spec sheet. Always check the exact model's listed Wi-Fi bands, maximum lock count and power requirements before ordering.
How to choose the right one
- Confirm your Wi-Fi network broadcasts a 2.4GHz SSID, since that is the safest common denominator across gateway generations.
- Count how many locks you need to bridge at one location and check the gateway's stated maximum.
- Consider placement: a gateway needs to sit within reliable Bluetooth range of the lock, ideally without thick walls between them.
- Read the seller's current spec sheet rather than relying on a generation nickname, since naming isn't standardised industry-wide.
Who should pick what
A single household with one or two locks rarely needs the newest or highest-spec gateway; an entry-level model on a stable 2.4GHz network is usually enough. Larger properties, short-term rental operators, or anyone bridging several locks from one access point benefit more from a newer generation with better range and multi-lock support. Whichever you choose, remember that Smart Lukko, as an independent app for TTLock-compatible hardware, works with gateways from any generation that the lock itself supports — the deciding factor is the gateway's own hardware, not the app.
Frequently asked questions
Is G4 always better than G2 or G3?
Generally newer generations add features like broader Wi-Fi band support or better range, but naming isn't standardised across every manufacturer or reseller. Check the specific product's spec sheet rather than assuming based on a generation label alone.
Can I use an older gateway with a newer lock, or vice versa?
In most cases yes, since gateways and locks communicate over the same general Bluetooth-to-cloud protocol, but compatibility can vary by firmware. Confirm compatibility with the seller if you're mixing hardware generations.
Do I need 5GHz Wi-Fi support on my gateway?
Only if your router doesn't offer a 2.4GHz network. Most gateways support 2.4GHz, which remains the most broadly compatible option for this type of device.
How many locks can one gateway support?
This varies by model and firmware, generally ranging from a handful up to several dozen nearby locks. Check the specific gateway's documentation for its stated maximum.
Related feature: TTLock gateway setup guide