WIS LIVING
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Clipsal & Schneider C-Bus · Melbourne

Your C-Bus still works.
Nobody will answer the phone.

That is the whole problem — not the hardware. We take over the system your dealer walked away from, put it back on your phone, and look after it for $29 a month.

Book a free C-Bus check See pricing
2003–2015 systems are our specialty 5500PCU · 5500CN · 5750WPL · 5750PSU No rewiring
If you inherited a C-Bus house

What you actually own.

C-Bus is a wired lighting control system made by Clipsal, now sold by Schneider Electric as SpaceLogic C-Bus. Instead of one switch per light, every light, fan, blind and circuit runs back to a bank of modules in the switchboard. Thin low-voltage cable links the keypads together on a “bus”.

The result is a house where any switch can control any light, scenes run at the press of one button, and the whole thing keeps working for twenty years. It is genuinely better hardware than most of what replaced it.

What breaks is not the bus. It is the relationship: the dealer who programmed it, the app that talked to it, and the person who knew which module was which.

Clipsal C-Bus wall keypad in a Melbourne home

A Saturn keypad, installed 2007. Still working. The switches stay — only the app is new.

Services

Six things we do on C-Bus.

All of it on the system you already have. We do not replace a working backbone to sell you a new one.

01 · App control upgrade

Your C-Bus on iPhone, iPad and Android — rooms, scenes, schedules, blinds and fans. Keypads you already touch stay exactly where they are.

02 · Repair & fault finding

Dead circuit, flickering light, module alarm. We measure the bus voltage and read every module, then name the failed part and its serial number.

03 · Module & dimmer replacement

Failed 5750WPL dimmer, 5750PSU power supply, 5500CN bridge or 5500PCU interface. Sourced, fitted, reprogrammed and labelled.

04 · Takeover & programming

Original installer gone? We read the existing project, rebuild the database where needed and document every room, circuit and scene.

05 · Presence & security lighting

Sunset-to-sunrise schedules with randomised timing, so an empty house still looks lived-in. The cheapest security you can install.

06 · Care & monitoring

A daily automated check of voltage and trends across every module. We call you before a light fails — with the part already on the ticket.

Start here

What is your house doing?

Most C-Bus faults fall into six patterns. If yours is one of them, we probably know the cause before we arrive.

One light flickers or won’t dim properly

A single channel behaving badly is almost always the dimmer module — not the keypad and not the wiring.

→ Usually a 5750WPL dimmer, tested at the board
Half a room, or a whole row, has gone dead

One output group failing together points at a relay module or a shared neutral, not at the switch.

→ Relay module or circuit fault
The app stopped working years ago

The system is fine — the gateway or the vendor’s cloud service went away. Nothing in the walls needs to change.

→ New gateway and app, wiring untouched
Keypads are dim, dead, or flickering

Keypads run on the bus power supply. When the PSU sags, the whole bus behaves strangely.

→ 5750PSU power supply check
Random behaviour — lights turning on by themselves

Usually a failing module chattering on the bus, or a corrupted project database after a power event.

→ Bus trace + database rebuild
“We were told it’s end of life, replace everything”

Almost never true. C-Bus is still manufactured and supported. What ended was the local dealer’s involvement.

→ Second opinion, free

Not on the list? Send a photo of the switchboard and a description to sales@wissecurity.com.au and we will tell you what we think before anyone visits.

Hardware

The parts we actually touch.

These are the units that fail, and the units that make app control possible. If your board has different part numbers, send a photo — the principle is the same.

PartWhat it doesWhen we replace it
5500PCUUSB PC interface — the original way a laptop talked to C-Bus. Often the only gateway in a 2000s house.When the app needs a stable, network-connected brain
5500CN / CNINetwork bridge — puts C-Bus on Ethernet so it can be reached by an app or a server.When remote access is wanted without a PC left running
5750WPL10-channel dimmer module. The most common failure point in older homes.Flicker, dead channel, buzzing, or heat damage
5750PSUBus power supply. Feeds the keypads and the network.Dropping bus voltage, dim or dead keypads
Relay modulesSwitch non-dim loads: fans, pumps, outdoor lighting, towel rails.Stuck output, chattering relay
Saturn keypadsThe wall panels you touch. Usually kept, not replaced.Only if physically damaged

We work on Clipsal and Schneider C-Bus, including SpaceLogic. We are an independent integrator — not a Clipsal dealer — which is exactly why we can keep an old system alive instead of selling you a new one.

The upgrade

Nothing in the walls changes.

This is the part homeowners find hardest to believe: we do not rewire the house, chase walls, or replace your keypads. The work happens at the switchboard and in software.

1
Read the existing projectWe pull the current database off the system and map every room, circuit and scene — including the ones the last installer left unlabelled.
2
Connect a gatewayA network gateway goes on the C-Bus network. If there is already a 5500PCU or 5500CN, we use it.
3
Program and name everythingEvery room gets a real name in English and Chinese. Scenes are rebuilt, schedules set.
4
Test, then hand overWe walk the house with you. Nothing is signed off until every circuit has been switched from the app.
WIS Living C-Bus app on a phone showing whole-house lighting

A real handover — 18 High St, 47 circuits, October 2026.

The part nobody else does

We know before you do.

A flickering light is not an app problem. One module reading 31.8 V is a hardware problem — and it shows up weeks before the light dies.

Connection — gateway → busGOOD
Power supply — one module lowCHECK
Control modules — 51 of 51 onlineGOOD
Communication — bus startingCHECK
Configuration — 4 circuits unassignedCHECK
Automation — schedules healthyGOOD

Evidence, not a warning light

5750WPL module 75 reads 31.8 V. Every other module reads 32.0–34.1 V. Manufacturer range is 32–38 V.

We send that reading, the serial number and a photo — not “something is wrong, book a call-out”.

Care plans from $29/month
Pricing

Installation by channel count.
Care by month.

Installation (one-off)C-Bus channelsTypical homeFrom
Standardup to 303–4 bedroom single storey$699*
includes
Canopy gateway
Medium31 – 70Double storey, 4–5 bedrooms$999*
includes
Canopy gateway
Large71 – 120Large home or multi-building$1,599*
includes
Canopy gateway

* Assumes a C-Bus USB PC interface (5500PCU) or network bridge (5500CN / CNI) is already fitted. If not, hardware is quoted separately. Repairs and module replacement are quoted per fault after diagnosis.

Essential

The app, kept running.
$29/month
  • All app features
  • Daily system check
  • Email fault notice
  • Support tickets — answered within 1 business day
MOST CHOSEN

Care

We watch it for you.
$59/month
  • Everything in Essential
  • We call you first when something drifts
  • Voltage & trend history
  • Annual system report
  • Priority call-out (every visit is charged)

Estate

For large homes and multi-building sites.
$99/month
  • Everything in Care
  • Priority parts & spares held
  • Multi-building dashboard
  • Guest & cleaner access windows
  • Quarterly system review (remote)
C-Bus questions

What Melbourne homeowners ask.

Can I control my existing Clipsal C-Bus from my phone?

Yes. We connect through your C-Bus USB interface (5500PCU) or a network bridge (5500CN / CNI). Your keypads, dimmers and wiring stay as they are — you gain iPhone, iPad and Android control.

Is C-Bus end of life?

No. C-Bus is now Schneider Electric SpaceLogic C-Bus and is still manufactured and supported. What usually disappears is the local dealer who programmed your system — that is the gap we fill.

Do you repair dimmer modules and power supplies?

Yes. We fault-find and replace failed C-Bus hardware including 5750WPL dimmers, 5750PSU power supplies, 5500CN bridges and 5500PCU interfaces. We identify the failing module by voltage reading and serial number rather than guessing.

My original installer is gone. Can you take over the system?

Yes. We read the existing project, rebuild the database where needed and document every room, circuit and scene. Systems installed between 2003 and 2015 are our specialty.

Does it work without the internet?

Yes. The brain sits in the house. Schedules, scenes and wall panels keep working during an outage; remote access runs through WIS rather than open ports on your router.

How long does the installation take?

Most homes are completed in one visit of three to five hours. Systems with 70+ channels are usually split over two visits.

Can C-Bus control blinds, fans and security lighting?

Yes. C-Bus relays and dimmers switch or dim lights, blinds and fans, and can run presence schedules that make an empty house look occupied.

What suburbs do you cover?

Greater Melbourne — Box Hill, CBD, Doncaster, Templestowe, Balwyn, Kew, Hawthorn, Camberwell, Glen Waverley, Mount Waverley, Burwood, Brighton, Toorak, South Yarra, Ivanhoe, Essendon and Point Cook.

Who is behind this

WIS Living is the smart-home arm of WIS Security.

WIS Security has been installing alarms, cameras and access control across Melbourne since 2015 — licensed, insured and ASIAL member 39793. C-Bus work came from clients asking us to fix what nobody else would.

About WIS Security ↗

Send a photo of your switchboard.

We will tell you what you have, what it can still do, and whether it is worth connecting — before anyone visits.

Book the free check 1300 008 818