Klemko 840005 Twilight Switch

The Klemko 840005 is a twilight switch (schemerschakelaar) designed for the automation of outdoor lighting based on ambient light intensity. Klemko Techniek B.V. is a prominent Dutch innovator in the electrical engineering industry, specifically known for smart lighting solutions and installation efficiency.

Originally founded in the Netherlands, Klemko has maintained its headquarters and primary operations in Nieuwegein. The company remains an independent Dutch entity and is a household name among professional installers in the Benelux region for its high-quality electrical components and sensors. Manufacturing for many of their core components continues to be focused in the Netherlands or within the European Union to ensure high reliability and compliance with TUV and CE standards.