Electronic seasonal timer for setting switching times over specific periods of time or specific days of the year with various functions such as switching ON, switching OFF, pulse, astro ON, astro OFF, astro pulse, random and cyclic for series installation, 2 changeover contacts for 16 A / 250 V AC (AC1), supply voltage: 110-230 V AC/DC, LCD display, joystick programming or programming via smartphone with Bluetooth or NFC. Astronomical time control through automatic switching at sunrise and sunset via zip code or location coordinates, selectable time offset of the sunrise and sunset times. Outputs and inputs can be expanded via 1Y.P2 and 13.21-B, contact material AgSnO2, max. inrush current 120 A for 5 ms, pulse function 1 second to 90 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, LV halogen lamps or LED with electronic ballast 400 W, LV 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