Mk2 SMSCom Hybrid Fan Speed Controllers are the simplest, quietest and most efficient way to regulate the output of in-line duct fans –just plug them into the controller, set the dials and let the on-board computer system do the rest. Hybrids completely remove buzzing and humming noises by combining heavyweight transformers with clever digital technology. This model is the most popular in the range – and it’s now been upgraded at no extra cost! It features a ‘maximum’ setting so that you can use over-sized fans without them ever kicking in at their full output level. The Pro’s light sensor can be used to increase extraction levels for 7 minutes an hour during darkness hours, lowering humidity levels and preventing issues with rot.

SMSCom Hybrid 4 Amp product Specifications:

  • Extremely quiet – totally eliminates issues with buzzing and humming
  • One of the few controllers to be recommended for use with Isomax fans by their manufacturers, Can.
  • Accurate temperature readings
  • Maintains a constant climate
  • Very simple to operate
  • Regulates minimum fans speeds
  • 4.5 metre temperature probe cable
  • 4amp version handles a 900W load
Reviews (0)


There are no reviews yet.

Be the first to review “SMSCom Hybrid Fan Speed Controller MK2 4 amp”

Your email address will not be published. Required fields are marked *

Shipping & Delivery

Shipping & Delivery

All our products are delivered in unmarked packaging.

Express parcel delivery service

All our products are shipped via DPD with email notifications 1 hour before delivery.  Prices are

  • Under 2KG - £3.99
  • Over 2KG - £7.99 
  • Free shipping on all orders over £250

Some postcodes within the UK, including but not limited to the Scottish Highlands and Northern Ireland will incur a delivery surcharge, for details please contact us PRIOR to placing an order.