Twilight switches switch electrical devices on when it gets dark and off again when it gets light. Devices in this series have an external sensor. They can be installed in the distribution board and adjusted from there, regardless of the location of the lighting. The operating and control voltage of the devices is 230 V AC. The EDS 16 have an adjustable switch-on threshold and a fixed switch-off threshold. A delay time when switching on and off ensures that these twilight switches do not react to short-term changes in light (car headlights, flashes). Properties: Energy saving through automatic lighting control, On/off delay masks short-term fluctuations in brightness, low power consumption, easy to install and adjust, adjustable switch-on threshold from 2 to 1000 lux, switch-off threshold specified by an internal factor of 1.5, potential-free normally open contact (16 A), switch-on/relay status displayed by LED, light sensor LF 1 for external installation (IP 44), cable length to LF 1 up to 100 m, several twilight switches can use one LF 1, installation type: twilight switch: quick attachment to mounting rail, installation position as desired, light sensor LF 1: wall mounting, preferably facing north or east, areas of application: controlling the lighting of streets, buildings and industrial sites. Notes: Depending on the order number, the twilight switch is supplied with or without a light sensor.