How Many Smart Switches Does Your Dubai Flat Need? Count Gangs, Then Pairs

Walk round your Dubai flat counting switch plates and you might get to nine. Order nine smart switches on that basis and you'll probably come up short. Smart switches are counted by the rocker, and a plate usually carries up to three of them. Some of your lights also answer to two rockers in two different places.

So you need a count of rockers, and a count of the lights that have two. Do both before you buy anything or ask anyone for a price.

Gangs, Positions and Two-Way Pairs

A gang is one switch on a plate, and each gang normally runs its own lighting circuit, so a 2-gang plate controls two circuits (Schneider Electric UAE). A two-way light is one you can switch from two places, like a bedroom light with a rocker by the door and another by the bed.

More than three gangs on one plate is "very uncommon" in a home, according to the same Schneider page, which counts dimmers the same way. So a two-gang dimmer plate is two dimmed circuits.

A plate's spot on the wall is a position. The plate by your front door with three rockers is one position and three gangs. If one rocker runs the entrance downlights, one the corridor and one the living room cove, that's three circuits, and each needs its own smart channel.

Schneider's example of a two-way light is a staircase, switched at the top and at the bottom. Common places in a Dubai flat are the bedroom door and the bedside, or both ends of a long corridor. In a villa, add the stairs and the landings. If a third place switches the same light, the extra switch is called an intermediate, and the light is still one circuit.

Whole-Plate Smart Switches and Hidden Modules Count Differently

Smart switches come as whole plates or as small modules hidden behind the plate you already have.

A whole-plate switch replaces what's on the wall. Aqara's Wall Switch H1 EU is "Available in Single and Double Rocker as well as With and Without Neutral" (Aqara), so one double-rocker unit covers a two-gang position, and a single-rocker unit can't.

A relay module (the part that does the switching) goes in the wall box behind your existing plate, and it's sold by channel. Shelly sells its 2PM Gen3 as a two-channel smart switch for mounting in the wall box (Shelly). A three-gang position then needs three channels, for example a two-channel module and a one-channel one, if the box has room for both. Box depth is its own question, covered in why most smart switches don't fit UAE walls.

On a smart lighting job we ask whether each position is 1-gang, 2-gang or 3-gang, because a quote counted in positions and a quote counted in gangs can describe the same flat with different totals.

Two-Way Lights Need a Plan for Both Ends

A light with two switches needs a plan for both ends before either one is changed.

A smart switch at one end, a battery switch at the other

Aqara says "An existing 2-Way setup can be upgraded to the smart one using the Wall Switch H1 EU and the Wireless Switch H1" (Aqara). The wireless one sits over the old box at the far end, and Aqara's product page claims it "will work exactly like a hard-wired 2-way switch" (Aqara). Both pages also say a compatible Aqara hub is required, so a small hub has to be in the flat as well and belongs on your list.

A module behind the switches you already have

Here both of your existing switches stay, and one relay module goes behind one of them. Shelly's Gen2 and later devices have an input setting called flip, where any change at the input changes the state of the output (Shelly API docs). With the pair feeding that input, pressing either end changes the light.

The wiring for either route is a licensed electrician's job: on the first, what happens to the old wires in the far box, and on the second, how the pair connects to the module. Either way the bedside switch keeps working, and you can also switch the light from your phone.

For your count, a pair is one circuit and one smart channel. On the whole-plate route, add one wireless switch for the far end.

Walk the Flat Before You Count

You can do this without tools. Don't unscrew a plate to look behind it. What's in the box, including whether there's a neutral wire (see our post on the missing neutral), is for a licensed electrician to check with the power off.

Some switches stay off the list. The one with a small red light outside the bathroom or laundry cupboard usually runs the water heater, which is a different job from a lighting circuit (we covered it here). Leave out the AC and cooker isolators too. They aren't light switches, and you don't need to press them.

Then go room by room and write one line per plate:

• Where it is, and how many rockers it has.
• What each rocker runs. Press it and look.
• Whether it dims.

Next, find the pairs. Turn a light on from one rocker, then walk to the other plates in that room or corridor and try their rockers. If one of them turns your light off, those two are a pair. Start with the bedrooms and corridors.

Now add it up. Say you found 9 plates with 15 rockers between them, and 2 of your lights are pairs. Each pair is two rockers for one light, so take 2 off: that's 13 circuits, and 13 smart channels. A light with three switches takes 2 off on its own. If you're replacing plates, add 2 wireless switches for the far ends of the pairs, and a hub if the brand needs one.

Matching Your Smart Switch Count to a Quote

Put your number next to any quote and check what it's counting. In the flat above, a line reading "smart switch x 9" is either counting multi-gang plates or has missed circuits, and the quote should say which. If you have pairs, the quote should also say what happens at each far end: a wireless switch, a module behind the existing switch, or a blank plate.

We wrote more on reading the scope line in how to read a smart home quote in Dubai. If you're renting and can't touch the wiring at all, the smart-bulb route in smart light switches for Dubai renters skips the wiring side of the count, because nothing in the wall changes.

Frequently Asked Questions

Is a 2-gang switch the same as a two-way switch?

No. Gang is how many switches share one plate, and each usually runs its own light. Two-way means one light is controlled from two places. A plate can be both: a two-rocker plate by the bedroom door where one rocker pairs with a bedside switch is a 2-gang position with one two-way circuit on it.

Do I need one smart switch for every light bulb?

No. You need one smart channel per circuit, and one rocker often runs several fittings, like a row of downlights in a corridor. Count the rockers that do something distinct. If two rockers in different places run the same light, that's one circuit, counted once and marked as a pair.

Can I put a smart switch on just one end of a two-way pair?

Only with a plan for the far end too. Either it becomes a wireless switch talking to the smart one, as Aqara describes for its H1 pair, or a relay module sits behind one of the existing switches so both keep working. Either way it's wiring work for a licensed electrician, and they should tell you what happens to the far switch before anything is changed.

Send Us Your Count

If you've done the walk, send us the list and we'll tell you what your flat needs.