Light that walks
with you.
Step onto the stair and it wakes up — one step after another, a pixel handrail flowing beside you, then fading once you’ve gone. Three controllers, one app, every kind of stair light.
Walk in. The stair wakes up.
- 01A sensor sees you
at the first step or the last, so it knows which way you’re going.
- 02Steps light in turn
at walking pace, in the direction you’re walking.
- 03The handrail flows
a pixel strip runs up beside you, in any colour.
- 04It fades behind you
once you’ve reached the end — or the moment you step off.
Both directions
Sensors at the foot and the head; the light always runs from the end you step on.
Learns your pace
Leave the off-delay on AUTO and it times real walks up and down, then holds the light just long enough.
Off early, not on a timer
When someone clears the far end, the fade can start at once instead of waiting out the delay.
Only after dark
Night mode knows sunrise and sunset for your city and keeps the stair dark by day.
Follow Me
A pool of light moves with your feet while the rest of the stair glows faintly.
Set by eye
Each step keeps its own pixel count, so an uneven flight still lights step-true.
Watches its sensors
The app shows each sensor’s health and flags one that is stuck.
Updates over Wi-Fi
New firmware installs from the phone. No cable, no site visit.
No router? Still works
The controller brings up its own hotspot, so the phone can always reach it.
Three controllers. One system.
The same firmware, the same app and the same sensors on all three. Pick the one that matches the lights on your steps.
- 24 MOSFET channels, fade in and out
- 3 buttons and 24 channel LEDs
- Pixel outputs, up to 600 pixels
- 185 × 68 mm
- 24 relays switch the live wire
- Two independent 220 V banks
- Optocoupler, isolated-supply design
- 231 × 74 mm
- One data line to the step driver
- 24-LED status ring, 3 buttons
- Long-cable data output
- 99 × 64 mm
For stairs with 12 V LED lights on every tread: strip lights, profiles or recessed step lights. Each step fades in and out on its own MOSFET channel, and the handrail strip plays along.
- 12 V IN XT60
- 24 STEP CHANNELS MOSFET, dimmed
- CHANNEL LEDS one per step
- DATA · CN2 pixel handrail
- 3 BUTTONS settings menu
- ESP32-S3 dual-core, Wi-Fi
- SENSORS CN3 · CN4
Flow · Step · Step + Strip · Slide + Strip · Step Only · Slide Only — and the 138-effect party mode.
For stairs that already have 220 V lamps, or where AC step lights are preferred. Each of the 24 relays switches the live wire to one light; the logic side is kept apart from the mains by design.
- ESP32-S3 Wi-Fi
- 12 V IN XT60
- SENSORS CN31 · CN32
- DATA · CN28 pixel handrail
- ISOLATION mains kept apart
- 24 RELAYS one per step
- MAINS · CN25 steps 1–12
- MAINS · CN27 steps 13–24
AC Step + Strip · AC Slide + Strip · AC Step Only · AC Slide Only. Relays switch ON and OFF — for dimmed steps choose SLC-D24.
The P24 keeps the brain small and sends the stair data down one line to an external 24-channel driver board, so heavy step wiring stays short and the controller sits wherever it is easiest to reach.
- 3 BUTTONS settings menu
- ESP32-S3 dual-core, Wi-Fi
- DATA · CN2 step driver + handrail
- 12 V IN XT60
- 24-LED RING every channel
- SENSORS CN3 · CN4
Flow · Step · Step + Strip · Slide + Strip · Step Only · Slide Only — and the 138-effect party mode.
The whole stair, in your hand.
Real screens from the current firmware, not mock-ups. The Android app and the controller’s own web page share the same four tabs — Control, Settings, Device and Wi-Fi.
1234
567- 1Status at a glanceRunning or idle, which sensor fired, and a live picture of the stair.
- 5Live 3-D viewEvery lit step, the handrail and the person walking, several times a second.
- 2Walk it from the phoneUp, Stop and Down run the lights exactly as a sensor would.
- 6Trigger from hereTest either direction without walking the stair.
- 3One-tap extrasNight-only sensing, the 138-effect party mode and a greeting.
- 7Sensors and countdownTriggered or clear, and how long until the lights turn off.
- 4Manual fillHold the stair at any level by hand — for cleaning, or a party.
- ∞Every phoneAndroid app, or any browser on the same Wi-Fi.
Set it up once. Tune it any time.
Everything an installer sets, and everything a homeowner might change later, is on the phone — and it is stored on the controller, so it survives a power cut.
123- 1ModeOnly the modes that suit the installation are offered.
- 224 coloursTap a swatch; the stair changes as you watch.
- 3Off delay: AUTOLearns how long real walks take, or set a fixed hold.
456- 4Every controllerTwo staircases? Tap a name to switch between them.
- 5Any pixel stripWS2811, WS2815, TM1834 RGBW or MT16703, six colour orders.
- 6InstallationInstall type, which end lights first, long-cable data.
789- 7UsageWalks today and lifetime, run time, hold, power and sensor health.
- 8Clock and weatherFor your city, over home Wi-Fi.
- 9Firmware updatePick the file, tap Upload & Install.
Which Wi-Fi it is on, whether the internet is up for the clock, weather and night mode, and a hotspot set-up with a Connect QR for a new phone.
Try the app. Right here.
This is the controller’s own control page — the same code the controller serves — running against a simulated controller inside this brochure. Tap Up or Down, change the mode or the colour, open the live view. The staircase beside it answers.
- Control — Up, Stop, Down, Night, Effect, Greeting, brightness
- The small stair picture — tap it for the live 3-D view
- Settings — the modes, 24 colours, off-delay AUTO, step count
- Device — strip type, colour order, install type, usage
A demo: the page talks to a simulated controller in your browser, and nothing is sent anywhere. Firmware upload is switched off.
A knob you turn.
No phone required.
A 1.5-inch round AMOLED touch screen inside a turning knob, paired straight to the controller. Turn to choose, press to change.
Android app
Control, Settings, Device and Wi-Fi — the four tabs on the previous pages.
Any browser
The controller serves its own control page to a laptop, an iPhone or a tablet.
Buttons on the board
SLC-D24 and SLC-P24 have three buttons and a settings menu.
Set up without a router
Its own hotspot and a Connect QR get a phone on in seconds.
Knob screens are illustrated.
Turn it. Press it. Tap it.
The knob’s pages, redrawn from the display firmware’s own layout, driving the same simulated controller as the app. Turn with the mouse wheel, by dragging round the metal bezel, or with the buttons; click the screen to press, or tap its cards and buttons.
- Home — tap UP or DOWN; press for manual control
- MODE — press, turn, press: the stair changes mode
- COLOR — turn through the 24 presets
- OFF DELAY — turn past 24 to AUTO
- Leave it — after a minute it sleeps to the clock face
The screens are redrawn for this demo from the display firmware; the real knob is a 1.5-inch round AMOLED. Pages follow the mode, as on the knob: a step-light mode shows Step Count and Step Fade, a pixel mode shows Speed and Pixel Length.
Fifteen ways to light a stair.
Choose the installation once; the app then offers only the modes that suit it. Brightness, colour, speed, delay and fade are tuned to taste.
On the SLC-A24 (install type 4) the same four run as AC Step + Strip, AC Slide + Strip, AC Step Only and AC Slide Only — the relays switch each 220 V light in the same order.
10 signature animations plus 16 motion patterns in 8 colour palettes. Let it cycle every 2 to 60 seconds, or hold a favourite; it returns to normal by itself after two hours.
Four steps to a lit stair.
- 1Mount the controller
with its 12 V supply, in one box near the stair.
- 2Wire the steps
each light to the terminal with its step number.
- 3Fix the handrail strip
with 12 V fed in every 5 m for even colour.
- 4Sensors, then the app
one at each end; pick the installation and a mode.
A point-to-point wiring diagram for every model — every wire drawn, from the supply to the last step.
Specifications | SLC-D24 | SLC-A24 | SLC-P24 |
|---|---|---|---|
| Step channels | 24 × MOSFET | 24 × relay | 24 via external driver |
| Step lights | 12 V DC LED | 220 V AC | per driver board |
| Dimming | Smooth fades | On / off | Smooth fades |
| Controller supply | 12 V DC · XT60 | 12 V DC · XT60 | 12 V DC · XT60 |
| Sensor inputs | 2 | 2 | 2 (+2 opto, hardware) |
| Pixel outputs | 4 | 4 + long-cable | 4 + long-cable |
| Pixel length | 600 pixels | 600 pixels | 600 pixels |
| On-board controls | 3 buttons, 24 LEDs | 24 LEDs | 3 buttons, 24-LED ring |
| Wireless | Wi-Fi · knob link | Wi-Fi · knob link | Wi-Fi · knob link |
| Board size | 185 × 68 mm | 231 × 74 mm | 99 × 64 mm |
Pixel strips: WS2811, WS2815, TM1834 RGBW, MT16703 · six colour orders · 600 pixels = 1,800 LEDs on 12 V WS2811. All three run the same firmware and app.
Designed and produced
in-house by IoT Electronics.
The circuit boards, the firmware, the Android app and the wiring diagrams — all developed by our own team, so the whole system is supported by the people who built it.
Specifications may change without notice. App screens are from firmware 4.9.19.