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Smart Grow Light Controller for Multi-Zone Grow Rooms

One wall-mounted touchscreen for the whole room: four independent 0–100% dimming channels, up to nine timer segments a day, a 10–180 minute sunrise/sunset ramp, and two-stage thermal protection that steps fixtures down before heat turns into crop damage. PWM and 0–10V output in the same unit, with Bluetooth app control for groups and multi-room networks.

SLTMAKS smart grow light controller, 4-channel touchscreen dimming control

Zone-By-Zone Control from a Single Screen.

Channel 1 drives your top lights, channel 2 the under-canopy rows, channels 3 and 4 the next rooms or supplemental bars. Each channel dims 0–100% on its own under a master level, so one fixture family per channel keeps spectrum and intensity exactly where each zone needs them.

Channels: 4 × 0–100% + master Output: PWM & 0–10V switchable Timer: 9 segments/day Sunrise/sunset: 10–180 min MTBF: 20,000 h

What the Touchscreen Does

Every function runs on the controller itself. Nothing here depends on a phone being in the room.

Four-channel dimming

CH1–CH4 each dim 0–100% independently under a master level. Rename every channel after the zone it drives, so the screen reads like your floor plan.

Nine timer segments a day

Stack up to nine brightness steps per day, each with its own level. A segment set to 0% is a clean lights-off. Timer programs take priority whenever they overlap a sunrise/sunset ramp.

Sunrise & sunset ramping

Fade up or down over 10 to 180 minutes instead of snapping on, easing plant stress and power peaks at both ends of the photoperiod.

Two-stage heat protection

Past your derating threshold, output steps down 1% every 5 minutes; past the shutdown threshold, channels close. Both recover automatically once the room cools 5°C below setpoint.

Live spectrum display

The screen shows the SPD curve of the current channel mix, loaded from bench test data of the actual LEDs. You read the spectrum you are running, not a generic diagram.

Environment sensing built in

Real-time temperature and humidity sit on the home screen, switchable between °C and °F. An external HT68-SHT probe is optional when the spot you need to monitor sits away from the controller.

The Screen Your Team Actually Works With

Two screens your team touches most: the dimming home and the sunrise/sunset planner.

Grow light controller dimming mode: four channels, master level, power and PPFD readout
Dimming mode. All four channels, master level, live power and PPFD on one screen.
Grow light controller sunrise and sunset setting screen: start time, rise up time, end time and rise down time in minutes
Sunrise / sunset planner. Start time and ramp length for the morning, end time and down ramp for the evening, each side toggled ON or OFF. Ramps run 10 to 180 minutes; timed segments always take priority.

Control Beyond One Room

The touchscreen runs a room on its own. The Bluetooth app is what makes a whole facility manageable:

  • Add lights, timers and gateways over Bluetooth in minutes
  • Group fixtures by room, area or rack and run the group in one tap
  • Create one network per site (Plantation A, Plantation B) and switch between them
  • Share a network by QR code with access control and a validity period, so managers and technicians each hold the right level of permission

Plug It into Your Drivers

Standard connectors, standard signals, no proprietary gateway in the middle.

Controller ports: DC12V in, RJ45 four-channel dim output, RJ14 single-channel output, sensor jack
  • RJ45 port carries all four channels (CH1–CH4) out to daisy-chained fixtures
  • RJ14 port carries channel 1 only, for single-channel lines
  • Signal switch sets the output to PWM or 0–10V to match the driver in front of you
  • Mixed rooms work too: SLTMAKS top-light and under-canopy series both accept 0–10V / PWM dimming input, so top and under-canopy fixtures run on separate channels of one controller
InputDC 12V ±5%, 0.5–1 A (power adapter included)
Standby power<0.1 W
PWM output10V ±5% amplitude, 0–100% duty cycle
Analog output0–10V
Channels4 × independent 0–100% + master level
PortsRJ45 8P8C ×1 (CH1–CH4) · RJ14 6P6C ×1 (CH1) · sensor jack PJ393 ×1 · DC in 5.5×2.1
Display rangesPower 0–1500 W · PPF 0–4800 µmol/s
MTBF20,000 hours
Controller packing list: controller, RJ45 and RJ14 cables, power adapter, wall screws

In the Box

  • Controller ×1
  • RJ45 Cat6+ cable, 2 m ×1
  • RJ14 6P cable, 3 m ×1
  • Power adapter ×1
  • Wall screws ×2 · positioning sticker ×1
  • HT68-SHT temp/humidity probe: ordered separately, only needed when the monitoring point differs from the controller position

Questions Buyers Ask Before Ordering

How many fixtures can one controller run?

The controller drives four independent dimming channels through its RJ45 port (CH1 to CH4), and fixtures daisy-chain along each channel. Practical capacity therefore depends on how many dimming inputs the drivers in your chain can stack, not on the controller alone. Send us your room layout and fixture count and we will plan the channel split with you before you order.

PWM or 0-10V: which signal do my drivers need?

Both are built into the same unit. You switch the output between PWM (10V amplitude, 0-100% duty cycle) and analog 0-10V in the system settings, so one controller covers both driver types. Match the setting to what your driver spec sheet calls for, or send us the driver model and we will confirm it.

Can I run the room without the app?

Yes. The wall-mounted touchscreen runs a room completely on its own: dimming, timers, sunrise/sunset and protection settings all work offline. The Bluetooth app adds facility-level control: add lights and gateways over Bluetooth, organize fixtures into groups by room or rack, create one network per site, and share a network by QR code with access control and a validity period so each farm manager or technician gets the right level of permission.

What happens when the room overheats?

Protection runs in two stages. Past the derating threshold you set, all open channels step down 1% every 5 minutes until the temperature falls 5 degrees below the setpoint, then ramp back automatically. Past the shutdown threshold, the channels close until the temperature recovers. A temperature and humidity sensor is built into the controller; an external HT68-SHT probe is available when the position you need to monitor sits away from the controller.

Sizing for a whole facility or comparing control options across fixture series? The top-light series, under-canopy series and solutions hub cover the fixture side; send us your room list and we will plan the channel split.

Planning Control for a Multi-Room Facility?

Send the room count, fixture list and preferred zones. We will map channels, groups and sensor placement into your lighting plan.

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