Timers and contactors

Switch the load safely.

A timer sets the schedule; a contactor carries the current so the timer never has to. Light controllers here too, plus timing for pumps and watering.

Nothing matches all of those filters.

Light controllers

Dim and switch several fixtures from one unit.

Omega Synco V2 LED Grow Light Dimming Controller

  • Brand Omega
  • Model Synco V2
  • Type LED lighting controller
  • Fixture capacity Up to 40 LED fixtures
£49.49

Telos Lighting Controller – For 0-10V Dimmable Grow Lights

  • Brand Telos
  • Type Timers & Contactors
  • Price from £127.95
  • Availability In stock
£127.95

Omega Matrix Lighting Controller – Dual Zone Light Dimming

  • Voltage 100-240V AC
  • Max load 1200W per channel
  • Zones 2 independently controlled
  • Fixture capacity up to 200 compatible Omega lights
£177.95

Growlink Digital LightLINK Controller – Grow Light Dimming

  • Brand Growlink
  • Model LINKS Digital LightLINK
  • Input power 24V DC via Growlink HUB
  • Current draw 1A, approximately 3W typical consumption
£246.95

DLI DLM 4 Zone Digital Grow Light Controller – Light Timer

  • Zones 4
  • Total capacity 1020 lights and 4 sensors
  • Per zone Up to 255 lights and 1 sensor
  • Timing Digital time clock
£265.95

Growlink lightLINK 4-Channel 0-10V Light Controller

  • Outputs 4 independent 0-10V analogue channels
  • Fixture Capacity Up to 50 fixtures per channel
  • Input Power 24V DC
  • Current 0.125A per channel max, 0.5A max overall
£498.95

Maxibright Quad Timer 4 x 600W – Grow Light Controller

  • Lamp capacity 4 x 600W or 2 x 1000W
  • Load rating 13 amp
  • Timing increments 15-minute segments
  • Contactor required No, switching is built in
£15.49

Telos Growcast Grow Light Controller – Bluetooth PPF Dimming

  • Control Bluetooth, via the Telos Mesh app for Apple and A...
  • Connectors included RJ11 Type 1, RJ11 Type 2, M-12 3-pin
  • Lights per unit Up to 50 by daisy-chain
  • Compatibility Most contemporary controller-port fixtures, inclu...
£127.95

Contactor and timer boards

The contactor carries the load, so the timer only ever carries a signal.

Loadstar Timer Contactor – Grow Light Switching

£62.49

Eco Technics Power Star Contactor – HID Light Switching

£34.95

Omega Metal Contactor – Grow Light Switching Relay

£107.95

MDF Contactor Boards – Grasslin Timer and Light Switching

£59.49

Plug-in timers

One socket, one schedule.

24hr Digital Timer – For Grow Lights and Pumps

£11.95

Maxibright Standard 24 Hour Analogue Segmental Timer

£5.49

VIVOSUN LCD Digital 7 Day Timer – Dual Outlet Sockets

£19.49

Time-R Programmable Digital Timer – For Pumps and Lights

£32.95

Grow Gadgets Heavy Duty Timer – 24hr Switch for 600W Lights

£9.95

Irrigation and feed timers

Timing for pumps and watering rather than lights.

Imperium Feed Duration Timer – Precision Irrigation

£88.49

IWS Control Units – For Flood and Drain Systems

£215.95

Timers and contactors for grow lights

A cheap mechanical timer will weld its contacts shut within a few weeks under an HPS or CDM load — the current spike when a 600W+ ballast switches on is enough to arc and fuse cheap contacts closed, leaving your light running 24 hours a day (or not switching on at all). A heavy-duty timer or contactor is built to handle that switching load properly.

For a single light, our 24hr Digital Timer or Heavy Duty Timer switches the load directly and copes with HPS and CDM ballasts without arcing. Running two or more lights from one circuit, step up to a contactor — the Eco Technics Power Star or Loadstar Timer Contactor (2, 4, 6 or 8-way) uses the timer only to trigger a relay, so the timer itself never carries the full lighting load. An MDF contactor board gives you a tidy pre-wired panel if you're running a multi-light room.

Sizing to your setup

One heavy-duty timer per light is the safe minimum; once you're past two or three lights on a circuit, a contactor is worth the extra cost to protect your timer and your wiring. Pair with our ballasts and hangers to finish the light rig, and see the grow tent setup guide for standard veg and flower light hours.

Free UK delivery over £60, Express Delivery available. Call 020 3488 0419 if you're not sure whether you need a timer or a contactor.