According to IEC 730-1, EN 60730-1,0631 Part 1, IEC 730-2-7, EN 60730-2-7,0631 Part 2-7 The timer has a day disk and one (1 channel) and two (2 channel) continuously adjustable short-time programs that can be repeated several times within 24 hours. The duration of the programs is set using an adjusting knob assigned to the corresponding channel. The respective start is programmed on the day disk by pulling out a segment. The shortest switching sequence (start of a switching time) is 30 minutes. The short program can be repeated 48 times within 24 hours. The program start, duration and number can be easily changed without any tools. Mounting types: Snap on DIN rail EN 500 22 Installation on wall or mounting plate