Existing Crestron system?
Keep it current
Processor upgrades, scene and device changes, iPad and touchpanel fixes, Home Assistant in the loop — or a take-over when the original installer is gone. These are normal, and they are exactly what Crestron's Service Provider directory exists for: independent, Crestron-authorised firms that work on systems they didn't sell. We are the only such firm listed for Hong Kong.
What this service covers
3-Series to 4-Series upgrades
Move an ageing MC3, CP3 or PRO3 onto a 4-Series processor without throwing away the lighting, keypads and scenes that already work. A defined upgrade, scoped after we see what is on the wall.
Ongoing maintenance
Scene adjustments, adding a device, firmware and certificate upkeep, iPad or touchpanel fixes after an iOS update. The small, regular work that keeps a working system feeling current — billed per job, no retainer required.
Home Assistant & third-party integration
Lighting and other functions exposed to Home Assistant or other platforms — typically over TCP/IP Client + XSIG for bidirectional control and status — without replacing your Crestron hardware.
Take-over when the installer is gone
Support contract expired, source files missing, original programmer unreachable. We inspect the processor, recover what we can, and lay out realistic paths — including the option to do nothing. No dealer contract required on your side.
Legacy 3-Series and 4-Series
Hong Kong homes still run a lot of Crestron 3-Series hardware — processors like the MC3, CP3, and PRO3, often installed a decade ago and quietly doing their job ever since. We work on that generation as well as 4-Series and Crestron Home.
If your goal is another platform first and Crestron second, we say so plainly: sometimes the lowest-risk path leaves the running program alone; sometimes a rebuild or a staged hardware exit is the honest answer.
How an assessment works
The first session is about facts, not commitments. Nothing gets loaded or rewritten until you have options in hand.
1. Backup first
Before anything else, we take a complete backup of the processor — program, touchpanel projects, and configuration — so every later step is reversible.
2. Recover what we can
Even without source files, a processor usually reveals its hardware inventory, signal names, and interface join maps — the raw material for scoping any change accurately.
3. Options, in writing
You get a plain-language summary of what was found and the realistic paths forward, so you can decide with clear facts — including the option to do nothing.
Typical paths
Extend the existing program
When source is available and matches the running program: backup, add the integration or change, test, and hand over documentation.
Bridge, program untouched
When source is missing but interface joins are recoverable: external systems talk to the processor the way a Crestron panel does. Keypads and existing UI keep working.
Upgrade or rebuild
A processor swap onto 4-Series, a panel / SMARTL refresh, a full program rewrite with source you keep, or a staged move off proprietary hardware. We size this only after the assessment.
Frequently Asked Questions
Questions homeowners and technical DIY users usually ask before we connect to a processor.
Can Crestron integrate with Home Assistant?+
Yes. A common approach is to expose lighting and other joins over XSIG (Intersystem Communication) via a TCP/IP Client on the Crestron processor, so Home Assistant can control and monitor those signals bidirectionally. We handle the Crestron-side programming and document the join map; you keep ownership of the Home Assistant configuration.
We lost our Crestron source code — what now?+
A compiled program on the processor cannot be edited directly. We first check whether source was left on the processor or elsewhere. Even without source, a processor often still yields useful data — hardware inventory, signal names, touchpanel join maps — which is usually enough to lay out realistic options, from integrations that leave the program untouched to a controlled rebuild.
Do we need an active Crestron support contract?+
No. We are an official Crestron Services Provider — a Crestron-approved independent programming firm — and can work on systems that were installed by someone else, including homes where the original support contract has lapsed.
Do you work on older 3-Series processors?+
Yes. We work on Crestron 3-Series (MC3, CP3, PRO3, and similar) as well as 4-Series processors and Crestron Home where that is the right path. A 3-Series to 4-Series processor upgrade is a defined job we already do.
Can the work be done remotely?+
Often yes, when remote access to the processor and network is available. On-site visits are used when physical access, keypad walkthroughs, or hardware checks are needed.
Will changing anything risk our current keypads and lighting?+
We take a full backup before making changes. Options that leave the running program untouched carry the least operational risk, and where a program does need to be modified or rebuilt, the work is scoped carefully before anything is loaded.
Can you take over a commercial premises, not just a home?+
Yes — shops, showrooms and buildings with an existing Crestron system use the same take-over path. Boutique hotels and serviced apartments have their own page.
Tell us what is on the wall
Processor model, roughly how many lighting circuits, whether you have source files, and what you want the system to do. We reply with a clear next step — no quote-by-form, no account manager layer.
Get in touch