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Theben Twilight Switches

LUNA 109 Twilight Switch Single Channel (2 Module)

Luna dusk-to-dawn switches are for the control of external or display lighting systems. The LUNA 109 is a 35mm 2 module wide switch and has a single brightness range selectable between 2 – 2000 LUX. Comes complete with a surface mount sensor.

  • 16 (10)A light sensor switching capacity.
  • 2 – 2000 LUX adjustable range.
  • 60 second (ON/OFF) built-in delay prevents nuisance switching.
  • Green LED shows switching status.
  • Red LED shows light sensor status.
  • Switches up to 2300W of filament lighting, 400VA of fluorescent lighting or 140W of low energy lighting.
  • Test button allows testing of the installation independently from the outside brightness.
  • Surface mount kit. Part No. 907.0.064.
  • Surface mount light sensor (spare). Part No. 907.0.416.
  • Energy Saving 2015
  • Theben 3 Year Guarantee


Timer Mode Dusk/Dawn
Setting Type Adjusting Screw
Brightness Range LUX 2 – 2000
Adjustment Brightness Range 1 Range
Switching Delay ON/OFF 60/60 Sec
Voltage Free Contacts Single Pole Changeover
Operating Voltage 230V AC
Switch Rating 230V AC Resistive 16A, Inductive 10A
Operating Temperature -30 to 55ºC
Operating Temperature Sensor -40 to 70ºC
EC Directives Conforms to Latest Directives
Dimensions (mm) Width 35.8, Height 90.1, Depth 69.2

Acceptable lighting loads: LUNA 108 / 109 – filament 2300W, fluorescent 400VA, low energy 140W, discharge 400VA.

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