Electronic timer switch with astro program for rail mounting, featuring 2 changeover contacts for 16 A / 250 V AC (AC1). The supply voltage ranges from 12-24 V AC/DC. It includes an LCD display and offers joystick programming or programming via an NFC-enabled smartphone using the Finder Toolbox app (available for Android and iOS). After installing the Finder app, users can read out or reprogram an existing program with maximum flexibility. Data transfer is done by touching the timer switch with the smartphone.

The device provides astronomical time control through automatic switching at sunrise and sunset, utilizing either postal code or geographic coordinates. It allows for a selectable time offset for sunrise and sunset times, as well as turning on and off during the astro switch-on time. The contact material is AgSnO2, with a maximum inrush current of 120 A for 5 ms. The pulse function can be set from 1 second to 59 minutes, with the shortest switching time being 1 minute.

The maximum switching capacity at 230 V AC1 is 4000 VA. Lamp loads include: incandescent and halogen lamps up to 2000 W, energy-saving lamps up to 400 W, LED (230 V AC) up to 400 W, low-voltage halogen lamps or LED with electronic ballast up to 400 W, low-voltage halogen lamps or LED with magnetic ballast up to 800 W, fluorescent lamps with electronic ballast up to 1000 W, and fluorescent lamps with magnetic ballast up to 750 W. There is safe isolation between the power supply and contacts.