Sensortronic Digital 100mm ENERGY EFFICIENT Axial Fans

For bathroom and toilet application. ENERGY EFFICIENT versions. Features a set-back (night time) and digital humidity display.

Designed for easy installation and attractively styled for discreet integration within the wetroom.

Using the latest fan technology, the ENERGY EFFICIENT Sensortronic Digital continuously displays surrounding humidity levels and features a set-back time function to eliminate unnecessary running.

For customers looking to comply with Building Regulations, the ENERGY EFFICIENT Sensortronic Digital offers lower Specific Fan Powers W/(l/s).

Suitable for: Bathroom | Toilet

  • Includes humidity sensor and digital display
  • Residents have continuous visibility on humidity levels
  • Comply with Building Regulation requirements
  • Offers Specific Fan Powers down to 0.32W/(l/s)
  • Features a set-back humidistat control to avoid unnecessary operation
  • Extracts 90m³/hr at 25l/s 27l/s
  • Can be wall, ceiling or window mounted
  • Low voltage variants available
  • Manufactured in the UK
  • 2 year warranty

Axial Fans:

Incorporate impellers that force air to move parallel to the shaft about which the impellers rotate. Axial fans are suited to short duct runs which connect directly to an external outlet or grille.

Model Description
D400LWHS 100mm | Energy efficient | Humidity sensor | Pull cord | Low voltage (SELV - 12V)
D400LWHT 100mm | Energy efficient | Humidity sensor | Timer | Low voltage (SELV - 12V)


Unit Dimensions & Cut-outs
F 166
G 166
H 100
J 42
K 42
wall / ceiling hole 117mm
window 126mm


Extract rate
at full speed
Supply voltage Max wattage Low Voltage Noise level Warranty Fan Speed Colour Self-cleaning sensor Max pressure Digital display Speed options Download facility
220/230 5 Yes 40db 2 year RTB 2400 White Yes 50 p.a. Yes No No

* Specification dependent on model



These fans are moulded in impact resistant high gloss recycled ABS thermoplastics for strength, durability and finish.

  • 220-230v ~ A.C. 50Hz Single phase supply transformed down to run a 12v dc motor consuming 5 watts. These fans are double insulated and do not require an earth. All wiring must comply with current IEE regulations. A double pole isolating switch, having a contact separation of at least 3mm in all poles, must be used with a 3 amp fuse fitted and mounted a minimum of 1.75 metres from the floor and less than 400mm from the ceiling.
  • Do not install the fan above a heat source. e.g. radiator

Single phase 12v dc motor with pre-oiled bearings fitted for a long maintenance free life and protected by a thermal fuse.


Two year no quibble guarantee.

  • The range is designed to be wall, window or ceiling mounted. Kits available on request.
  • Wall kits comprise a wall sleeve (275mm long) and a gravity grille (white, terracotta, stone, grey or brown).
  • Window kits comprise an external white fixed grille and internal fixing plate.
  • Ceiling kits comprise 3m of 100mm flexible ducting and an external fixed grille (colours to suit).
  • When installing through a wall a 107mm hole is required, 126mm through a window.

D 400 LW - extract rate of 90m³/hr, 27 litres per second

Additional Data
  • Maximum pressure: 50 p.a. Fan speed: 2400 r.p.m.
  • Sound volume: 40.0 dB(A) Maximum operating temperature 40ºC.
  • Protection Rating: IPx4. Power Consumption: 12v dc motor - 5W max