Crestron has two new DIN rail lighting modules coming, a four channel universal dimmer and an eight channel universal switch, and Residential Systems reports that both are expected in October 2026. If you are building or renovating in Dublin or Cork, the new Crestron DIN modules could shrink the lighting panel you have to find room for, so they are worth knowing about before your electrician sets out the plant room.
The short version
- DIN-4DIMU4. Crestron lists it as a universal dimmer with 4 feeds and 4 bridgeable channels.
- DIN-8SWU8. A universal switch with 8 feeds, giving up to 8 switch channels or 4 motor control channels, rated 100-230VAC.
- Shown twice. At CEDIA Expo in Denver at the start of September 2026, then on Crestron's stand at the Monaco Yacht Show.
- Already supported in software. Crestron Home 4.12, released on 22 September 2026, names both modules in its release notes.
- One more arrival. The Cameo Dual Dimmer (CM2-DIM2EX) puts two dimming channels behind one wall plate, and 4.12 is ready for it when it ships.
- Not yet known. Prices, the date the modules reach the Irish market, and the full specification. Neither module was listed in our Crestron shop or had a data sheet we could find on 1 October 2026.
What Crestron DIN modules do in a house
A DIN rail is the metal rail inside an electrical enclosure that breakers clip onto. Crestron makes dimmers, switches and interfaces that clip onto the same rail, and a group of them in one enclosure is the lighting panel. Every lighting circuit in the house is wired back to that panel instead of to a switch by the door.
What you get on the wall is a Crestron keypad: one neat plate with engraved buttons for scenes such as Evening or All Off, in place of a row of dimmers. Because the cabling is different from a conventional house, this is a decision for the design stage, and our first fix guide for self builders covers what has to be agreed before the walls are closed.
Why a smaller lighting panel matters on a self build
In an A rated home the plant room is the most argued over space in the building. The heat pump cylinder, the ventilation unit, the heating manifolds, the distribution board and the network cabinet all want the same wall, and the lighting panel arrives last.
The universal dimmer Crestron sells today, the DIN-1DIMU4, controls four circuits and is 12 DIN module spaces wide, which is 216 mm. A generous self build with 32 dimmed circuits needs eight of them, more than 1.7 metres of rail for the dimmers alone.
This is the problem the new pair is aimed at. Residential Systems reported from CEDIA Expo on 10 September 2026 that the two modules take the place of several older devices and are meant to cut panel sizes in half. It also describes them as "intentionally designed as a matched pair": two devices for centralised lighting in a home that reduce the stock a dealer has to keep. Treat the halving as a reported figure, not a measured one. Crestron has not published the width of either module, so we cannot yet show the saving on a real panel drawing.
Feeds, channels and what "universal" covers
Two words in Crestron's descriptions need explaining. A channel is one circuit the module controls. A feed is a supply into the module from a breaker in the distribution board. Today's DIN-1DIMU4 has one feed for its four channels. The DIN-4DIMU4 has a feed for every channel, and so does the DIN-8SWU8, which should let each circuit have its own breaker.
On the universal dimmer Crestron sells now, the channels can dim both forward phase and reverse phase loads, the two methods that mains dimmable LED fittings rely on. We will wait for the data sheet before saying what the new dimmer can carry. The switch module looks after everything that is on or off, and its motor control channels suggest it can also drive motors.
Where DALI and the DIN-DLI fit
Many new builds now specify DALI light fittings, where the dimming happens inside each fitting's driver and the panel only sends instructions. Those circuits need an interface, not a dimmer. Crestron's is the DIN-DLI: DALI-2 certified, three DIN module spaces wide (54 mm), and able to run one DALI loop of up to 64 devices in up to 16 groups, connected over Cresnet or Ethernet.
Crestron singled it out alongside the new modules after the Monaco Yacht Show. In Crestron's account of the show, dated 28 September 2026, Daniel Kerkhof, director of Crestron Marine, is reported as saying the DIN-DLI is also a key product, and is quoted: "The amount of addresses that we can now handle with a single module is a big plus." The same post describes the dimmer and the switch as the latest milestones in a multi-phase effort to renew the whole DIN rail line.
So a well designed house usually mixes all three: DALI for the architectural lighting, phase dimming for pendants and lamps that are mains dimmable, and switched channels for everything else. Our lighting control pages for Dublin and Cork explain how we design that mix.
The Cameo Dual Dimmer, for rooms you are not rewiring
A renovation that keeps its existing wiring cannot bring every circuit back to a panel. That is the job of in wall dimmers such as Crestron's Cameo 2 dimmers, which replace the switch at the door and talk to the system over Crestron's infiNET EX wireless.
CE Pro reported on 25 September 2026 that Crestron Home 4.12 adds support for the upcoming Cameo Dual Dimmer, the CM2-DIM2EX, which controls two separate lighting loads from one wall box.
One caution. The Cameo 2 dimmer already in our shop is rated 100-240VAC, but Crestron has not yet said what voltage the dual dimmer is built for or when it ships. Ask us before you plan a room around it.
A plan for each stage of the build
- Design. Count the circuits and mark each as DALI, phase dimmed, switched or motorised. Size the enclosure for the modules that exist now.
- First fix. Nothing changes. Circuits still run back to the panel position and keypads still need their control cable.
- Panel build. This is when the choice of module is made, based on what is actually in stock. October 2026 is an expected date from the trade press, not a delivery promise, so do not let a build programme depend on it.
- Commissioning. The processor needs Crestron Home 4.12 or later, and the modules are set up by your dealer in Configure Pro.
If you already have a Crestron system
You do not need to change a panel that works. The existing modules are still on Crestron's list of devices supported by Crestron Home.
To add the new modules, the system has to be on Crestron Home 4.12 or later, which Crestron's manual says needs a CP4-R (Version 2), MC4-R (Version 2) or DIN-AP4-R processor. A firmware update is booked as a visit: a 4 hour visit is €440 plus VAT, and the full rates are on our Crestron installation page. If your system is older and custom programmed, our Crestron upgrade guide explains the route to Crestron Home.
1Install is a Crestron Elite Partner, and our founder, Kieran McGuire, holds every Crestron certification. We design and install Crestron lighting from our Dublin and Cork offices and supply the hardware through the lighting section of our Crestron shop.
Questions we are often asked
Can I buy the DIN-4DIMU4 or DIN-8SWU8 from your Crestron shop?
Not yet. Neither was listed on 1 October 2026 and Crestron has not announced a price. Contact us and we will confirm availability with Crestron for your project dates.
Should I delay my lighting panel until the new modules arrive?
No. Design it around today's modules and leave the decision until the panel is being built. The cabling at first fix is the same either way.
Do I need dimmer modules if my fittings are DALI?
Not for those circuits. DALI fittings are dimmed by their own drivers and controlled through an interface such as the DIN-DLI. Most houses still have some mains dimmed and switched circuits, which is where the dimmer and switch modules come in.
Who installs the modules?
The panel carries mains voltage, so it is wired by a registered electrical contractor. We supply the modules and the panel schedule, then set up and test the system.
Is the Cameo Dual Dimmer suitable for a house in Dublin or Cork?
We cannot say yet. Crestron has confirmed two independent channels and support in Crestron Home 4.12, but not the voltage, the back box it fits or a shipping date.
Book a consultation or call Dublin on 01 906 9326 or Cork on 021 202 8107.
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