The Brief
Mr. Lim had just collected the keys to a brand-new 2-storey link house in Eco Majestic, Semenyih. Before moving in, he wanted to convert most of the lighting and several power points to smart controls — voice assistant, scheduled scenes, and away-mode lighting — without ripping up freshly-handed-over walls.
He had already bought a mix of Sonoff Mini R4 inline modules and Aqara H1 wall switches, but wasn't sure which spots needed neutral wires, where the Wi-Fi blackspots would be, and whether his consumer unit could handle it all. He reached out to our Semenyih electrician team a week before handover.
Site Survey at Handover
We arrived the day Mr. Lim collected the keys. Eco Majestic developer-spec link houses generally come with a single-phase 60A supply, a 12-way Schneider DB board, and standard 13A sockets — but smart-switch installation has a few quirks specific to new Malaysian developments:
- Most lighting circuits are wired without a neutral at the switch (loop-in-ceiling method). Many smart switches need a neutral, so we had to plan workarounds upfront.
- The TP-Link router was placed in the study upstairs — far from the kitchen ceiling fan switch and the porch lights. We measured Wi-Fi signal at every planned smart-device location.
- The existing DB board had spare ways, but the main switch was a non-RCD type — risky if we were going to add modules behind the walls that homeowner won't ever see.
Why the Pre-Renovation Survey Matters
Doing the smart-home audit BEFORE the furniture goes in means we can run extra neutral wires inside existing conduits, swap the main switch to RCBO without dust everywhere, and route ceiling-fan modules with the lights still off. Once curtains and built-ins are in, the same job becomes triple the work.
The Plan We Agreed
After the survey, we sat down with Mr. Lim and proposed a 3-day scope:
- Day 1 — DB board upgrade: main switch swapped for a 63A RCBO, three new MCBs added for the smart-circuit splits, all terminations re-torqued. New circuit labels printed and slipped behind the cover.
- Day 2 — Smart-switch installation: 14 Aqara H1 wall switches across living, dining, bedrooms, staircase, and master bath. Where no neutral was available at the switch box, we pulled a 1.5mm neutral from the nearest ceiling rose through the existing conduit (no chasing).
- Day 3 — Smart modules + commissioning: 6 Sonoff Mini R4 modules installed in ceiling roses for fan, porch, and garden lights. Paired everything to the Aqara hub, set up "Movie", "Sleep", and "Away" scenes, walked Mr. Lim through the app.
What We Found Mid-Job
Two surprises showed up once we started opening boxes:
- One switch box in the master bedroom had no neutral and no spare conduit run. Rather than chasing a fresh groove into the wall, we used a Sonoff Zigbee Mini R4 in the ceiling rose and kept the existing mechanical switch as a wireless trigger. Same outcome, no wall damage.
- The kitchen ceiling fan circuit was sharing the same 16A MCB as the cooker hood. Combined with a future induction hob, this would have nuisance-tripped. We split the fan onto its own 10A circuit using the spare ways we'd reserved.
Both decisions were discussed with Mr. Lim before we proceeded — he confirmed via WhatsApp during his lunch break, and we kept the day on schedule.
The Result
By the end of Day 3, every light in the house could be triggered three ways — physical switch, app, or voice. The hallway lights now turn on automatically when motion is detected after 7pm. The porch and garden lights run on a sunset-to-11pm schedule. The fan switches still feel like normal switches, with no flickering on/off cycles when paired with the LED downlights (we used the dimmable Aqara variant on those circuits).
Mr. Lim's biggest win, he told us, was being able to set up "Away Mode" — random light patterns through the house — before driving back to KL for work. For a freshly-handed-over house in a growing township like Eco Majestic, that peace of mind matters.
Project Snapshot
Investment: RM 6,800 (smart switches and modules supplied by homeowner; labour, DB board upgrade, and all wiring materials included). Duration: 3 days on site, with 1 follow-up visit 2 weeks later for a free scene tweak. Coverage: 14 wall switches, 6 ceiling modules, 1 DB board upgrade.
What This Job Tells Us About Eco Majestic Homes
Eco Majestic and the wider Semenyih corridor have grown fast — Setia Ecohill, Eco Majestic, Bandar Rinching, Taman Semenyih Mewah all share similar developer-spec wiring. Most new owners we meet want the same things: smart lighting that "just works", a tidy DB board, and an electrician who picks up the phone. We service the whole stretch from our base — licensed electrician services across Semenyih — so a smart-home consult typically books within 48 hours.
For homeowners considering similar upgrades, two upstream services we usually pair this with: general electrical installation for fresh circuits and outlets, and a pre-move safety inspection to catch anything the developer rushed.
Customer Satisfied
"They surveyed before I even moved in, planned every switch, and finished in 3 days. The DB board looks tidier than how the developer left it. Voice control works on the first try every time."
- Mr. Lim, Eco Majestic Semenyih