Surface-mounted twilight switch for automatic switching of lighting, potential-free relay contact, setting of the light value from the outside, LED setting aid (delay-free), precise settings thanks to new photodiode, switch-on and switch-off delay, double cable entry from below or through the rear wall of the housing possible, plug-in terminals (up to 2.5 mm) for quick and easy installation, large connection space, suitable for wall and inside corner installation, compatible with old and new thanks to exchangeable module, housing made of impact-resistant, UV-stabilized polycarbonate, captive stainless steel screws