Day/Night switches


50 years of day/night switches

Servodan is a pioneer in the production of day/night switches, and since the 1950s has helped shape developments. Over the years, as requirements have become tighter, Servodan has supplied the market with day/night switches adapted to suit technical developments and applications.



 • Driveways

 • Back yards

 • Houses

 • Holiday homes

 • Street lighting

 • Parks

 • Tunnels

 • Multi-storey car parks

 • Car parks



 • Energysaving

 • Safe and secure

 • Effective burglary deterrent


What is a day/night switch?


A day/night switches outdoor lighting on and off automatically. It consists of a light-sensitive element that registers the brilliance of the ambient light. A switch is activated when the daylight reaches the pre-set level.


Brief changes in light caused by clouds, car lights, lightning etc. will not activate the switch, since there is a built-in time delay.


Today day/night switches is available in many varieties, so it is always important to choose the right system, to suit your needs and control requirements.


Choice of solutions

Before choosing a day/night switch it is important to know:


 • The installation site (surroundings)

 • Load (light type/number)

 • Tolerance requirements (energysaving)

 • Adjustment requirements


Day/night switches have the advantage over time switches in that they react to the light level, not the time. This means that day/night switches always switch on the lighting when it is needed, and at the same lux level, regardless of whether it is winter or summer












Day/night switch for DIN rail

For installation in a board where settings/adjustments must be centralized. The sensor is placed outdoor.

Day/night switch on junction box

Simple solutions, control direct or through contactor. Settings on in- or outside.



More information

 • 3D movie

 • Example of use

 • Product overview

 • System overview

 • Documentation