Digital Astro Timer with Combination Function AlphaRex D21, 1 Channel, 2 Modules with 56 Switching Programs for DIN Rail 230V/50Hz. The digital Astro timer AlphaRex D21 with combination function from Legrand is designed for mounting on a DIN rail and features 2 modules with one channel.

By activating the Astro function, switching times are adjusted daily according to the changing length of daylight throughout the year. This means, for example, that in autumn, the switching times in the morning are executed later and in the evening earlier.

The timer can be combined with the weekly timer function. It offers 56 possible switching programs for controlling lighting, motors, fans, and more.

Programming can be done directly on the device or via a PC.

Functions: Permanent ON/OFF, automatic summer/winter time adjustment, holiday program, random program, 1-hour test, PIN code lock, operating hour counter, backlight.

Technical details: 5 years of backup time, accuracy +/- 0.1 sec/day, shortest switching time: 1 sec., zero-cross switching. Switching output: 1 changeover contact, 230 VAC, 1 channel, 2 TE.