Electronic timer with astro program for series installation, 2 changeover contacts for 16 A / 250 V AC (AC1), LCD display, joystick programming or programming via an NFC-enabled smartphone with the Finder Toolbox app (Android and iOS). After installing the Finder app, an existing program can be read out or a new program can be programmed with maximum flexibility. To transfer the data, the timer is touched with the smartphone. Astronomical time control through automatic switching at sunrise and sunset via postcode or location coordinates, selectable time offset of the sunrise and sunset times as well as switching on and off during the astro switch-on time, contact material AgSnO2, max. inrush current 120 A for 5 ms, pulse function 1 second to 59 minutes, shortest switching time 1 minute, max. switching capacity at 230 V AC1: 4000 VA. Lamp loads: incandescent and halogen lamps 2000 W, energy saving lamps 400 W, LED (230 V AC) 400 W, low-voltage halogen lamps or LED with electronic ballast 400 W, low-voltage halogen lamps or LED with conventional ballast 800 W, fluorescent lamps with electronic ballast 1000 W, fluorescent lamps with conventional ballast 750 W, safe separation between power supply and contacts