Dusk switch with remote sensor is suitable for controlling lighting systems such as home lighting, yard lighting, and display window lighting. The control unit is designed for mounting on a mounting rail and can be set to approximately 5 to 500 Lux or 100 to 10,000 Lux. The remote sensor is supplied without connection cable and can be extended with 2x1.5 mm² up to a maximum of 50 meters. A mounting clip for the remote sensor is also included. The delay is designed so that short-term changes in brightness, such as those caused by car headlights or lightning, do not affect the switching behavior.