SMS 4.5A Mark 2 Twin Fan Controller

SMS 4.5A Mark 2 Twin Fan Controller

A plug-and-play twin fan controller that runs two fans through a single unit — plug the fans into the front, plug the controller into the wall, configure and walk away. All fan power draw runs through the box, so total capacity is limited to the 4.5A unit rating; plan your fan wattages accordingly.

Why growers choose the SMS 4.5A Twin Controller:

• Runs two fans from one unit — typically intake and extract fans on one coordinated control
• 4.5A total capacity — fits most standard 6"-8" AC fans within the current budget
• Plug-and-play operation — no wiring, no configuration headaches, just plug in and go
• Mark 2 revision — updated from the original SMS controller, improved reliability
• Clean front-panel design — two fan sockets on the front, power cord from the back
• Compact form factor — fits neatly on a wall or control shelf

Who it's not for:

Total load must stay within 4.5A — check your fan wattages (a typical 6" fan draws around 0.5A, 8" around 1A, 10" around 2-3A). Not compatible with EC fans — AC only. For temperature-triggered auto-speed, see the G.A.S Pro Plus or Enviro Controller V2 instead.

See it running in our Stone shop. Drop by Unit 24, Emerald Way, Stone Business Park (ST15 0SR) to see this fixture set up, or call us on 01785 556355 (Mon–Fri, 10am–5pm) to talk through whether it's the right choice for your tent size and grow style. In stock now with 24hr UK dispatch, or choose click & collect at checkout.