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The photo sensor detects the brightness of the sun. This means that the sun shading products can be operated automatically and your house is protected from overheating - even when you are not at home. The special feature of the FO-4 photo sensor is the integrated shadow cross. The information about which façade needs to be shaded is provided by the FO-4 photosensor itself. A separate shadow cross is no longer necessary.

Photo sensor FO-4

Technical data

  • Dimensions: L84 x W82 x H90 mm
  • Measuring range: 2 lux to 200 kLux
  • Connection type: Screw terminals
  • Case: silver
  • Case: plastic
  • Protection class: IP65

Function description

Individual and versatile, the FO-4 photo sensor ensures optimal shading in many situations. For example, when controlling awnings or roller shutters. An adjustable delay time ensures constant protection, even if a cloud briefly obscures the sun. 

It has a built-in shadow cross. This means that it evaluates exactly which side of the house the sun hits and determines where shading is needed.

Due to the precise evaluation of the brightness, your roller shutters will automatically go up and down even when you are on holiday - this way you not only protect your furnishings from damaging UV rays, but also deter burglars.


Article Name
131033 Photo sensor FO-4
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