A worked example, not a specific customer project — illustrative reference design showing how the pieces fit.
Hardware prices verified 16 July 2026. Ubiquiti pricing changes — we confirm current pricing on every quote. Prices are indicative CAD, all-in. Contact AVNFi for a current quote.
The scenario
There’s already a garage door or a gate, and it already has an opener on it. A residential garage opener, a commercial slide gate operator — something that works and that nobody wants to replace.
The ask: bring it into UniFi. Open it from the app. Badge in at the gate. Know whether it’s actually closed — which turns out to be the feature people care most about once they have it.
This is a small design that’s mostly about a wiring question.
The build
Assumes a UniFi gateway and a PoE++ capable switch already on site. If not, start at Design 1 or Design 4.
Priced
| Qty | Item | All-in each | Total |
|---|---|---|---|
| 1 | UA-Hub-Gate — gate/garage controller | $431 | $431 |
| 1 | UA-G3-Flex — NFC + keypad reader (optional) | $301 | $301 |
| Priced subtotal (indicative CAD, all-in) | $732 |
Confirmed before quote — not priced here
| Item | Status |
|---|---|
| Door position sensor | The right sensor depends on the door and the mount. Not yet captured in our catalogue — read from cart / source before quoting. |
| Security+ 2.0 style opener adapter | Third-party. Depends entirely on your opener’s make, model and vintage. Priced at source. |
| Cable, conduit, mounts, post | Site-dependent. |
| Labour | Separate. |
We’re not printing a number for the adapter, because the honest answer is that it depends on your opener and we’d be guessing. That’s a ten-minute site check, not a catalogue lookup.
Why each choice
UA-Hub-Gate ($431) — and why it’s not the door hub
The gate hub is the outdoor-rated, opener-oriented member of the Access family. The differences from the UA-Hub-Door matter here:
| UA-Hub-Door | UA-Hub-Gate | |
|---|---|---|
| Operating temp | 0 to 40°C | -30 to 60°C |
| Relays | 2 lock, 2 aux | 2 operator (dry), 1 aux, 1 side-door 12V |
| Draw | 50W | 60W |
| PoE | PoE++ | PoE++ |
The temperature range is the whole reason this SKU exists. A door hub is rated to 0°C. In Calgary, a door hub in an unheated garage is out of spec for a third of the year. The gate hub goes to -30°C.
The two operator dry relays are the other half. A dry relay is just a switch — no voltage, no current, it closes a contact. That’s exactly what a garage opener’s wall-button input expects, which is what makes this integration possible without modifying the opener.
60W, PoE++. This is the biggest PoE load in the Access line.
The door position sensor — the part that’s actually useful
The opener knows what it last did. It does not know where the door is.
Send an “open” command to a garage opener and you learn that a command was sent. You don’t learn whether the door opened, or whether it opened, hit a bike, and reversed. The position sensor is what turns “I pressed the button” into “the door is closed.”
It wires into the gate hub’s inputs. It is the feature people notice. Being able to open the garage from your phone is convenient. Being able to check from the airport whether you left it open is the one they tell their friends about.
The Security+ 2.0 adapter — the third-party bit
Many modern openers use Security+ 2.0, a rolling-code protocol. That’s a security feature, and it means you can’t just wire a dry contact across the wall button on every opener — many need an adapter that speaks the protocol.
What this depends on:
- Your opener’s make, model and year. This is not a guess we’ll make from a photo.
- Whether it exposes a compatible wall-button or accessory terminal.
- Which adapter that specific opener needs.
This is a site check. We look at your opener, identify the model, and confirm the adapter before anything is ordered. We’d rather spend ten minutes in your garage than put a number on this page that’s wrong for your opener.
Worth saying plainly: third-party opener integration is the least standardised thing in this entire wiki. Every other design here is catalogue parts fitting together in known ways. This one is “it depends on your opener”, and any installer who quotes it without looking is guessing.
UA-G3-Flex ($301) — the reader, if you want one
Optional. Skip it if app-only access is enough — plenty of homes don’t need a reader on the garage.
Worth it when there are people who should get in but shouldn’t have your app: staff, a cleaner, a tenant, a delivery. NFC card or keypad code, every entry logged with a time and a name, and access revoked in about four seconds when someone leaves.
Rated -30 to 60°C. Correct for an exterior mount in Calgary.
Power check
| Device | Draw | Class |
|---|---|---|
| UA-Hub-Gate | 60W | PoE++ |
| UA-G3-Flex | 5W | PoE |
| Total | 65W |
What breaks if you undersize
⚠️ The USW-Ultra family cannot power this hub. At all.
This is the one that catches people.
The USW-Ultra and USW-Ultra-210W are PoE+ maximum — 30 watts per port. The UA-Hub-Gate needs PoE++ at 60W.
No amount of budget fixes this. Even the USW-Ultra-210W running on its 210W adapter with a full 202W available still cannot power this hub, because the limit isn’t watts — it’s the port class. A PoE+ port cannot deliver PoE++ to a device that needs it. The hub won’t come up.
What works: a USW-Pro-24-PoE ($1,025) — 400W with 8 dedicated PoE++ ports rated to 64W each. Or any Pro-series switch that lists PoE++.
If your site has a USW-Ultra as its only switch, the gate hub is not an add-on — it’s a switch upgrade. Better to know that before ordering the hub.
The rest
A UA-Hub-Door instead of the gate hub, to save $124. It’s rated 0 to 40°C. Your garage is not. It’ll work beautifully until November.
Skipping the position sensor. You get a button in an app that tells you nothing about the door. It’s the cheapest part of the build and the reason to do the build.
Assuming a dry contact will drive a Security+ 2.0 opener. Sometimes it will. Often it won’t. Site check.
Mounting the reader somewhere unsheltered without thinking about it. -30°C is the rating. Calgary tests it.
The expansion path
| Want | Do | Cost |
|---|---|---|
| See the gate | G6 Bullet ($307) or G6 Turret ($307) on the approach — IP66, 30m IR. | $307 |
| Read plates at the gate | AI LPR (25.5W, PoE+) — gate opens for known vehicles. | see catalogue |
| Talk to whoever’s at the gate | UA-Intercom (13W, -30 to 60°C) + Intercom Viewer inside. | see catalogue |
| A second gate or door | Another hub. Each controlled opening gets its own. Each needs a PoE++ port. | $431+ |
| A side door beside the gate | The gate hub has a 12V side-door lock terminal built in — no second hub. | strike only |
| Chime on gate events | PoE Smart Chime ($105, 3W). | $105 |
The honest summary
The UniFi side of this is simple. Hub, sensor, optional reader, PoE++ port. Known parts, known behaviour, and the compatibility answer is on the spec sheet.
The opener side is not. It depends on a piece of third-party hardware that’s already on your wall, and the only way to answer it properly is to look at it.
So: the site check comes first. We identify the opener, confirm the adapter, check the switch has a PoE++ port, and then quote. Any number given before those four things is a guess — and this page would rather be honest than tidy.
Prices indicative CAD, all-in, hardware at cost, labour separate. Ubiquiti reprices without notice; lead time ~7–10 days. Verified against ca.store.ui.com and techspecs.ui.com 2026-07-16. Third-party opener hardware is outside Ubiquiti’s catalogue and outside these figures.