Sangamo 71101 1Mod 1Ch 7Day Din Rail Swi. Sangamo Astro Din Rail Timer Is Designed For Lighting Applications, Particularly Street Lighting, Due To Its Part-Night Switching Capability And Its Single Module Width. The 71101 Can Be Extremely Quick And Easy To Program Thanks To It'S Removable Fascia And The Ability To Program Via Your Computer Using Sangamo'S Easy Vue Software. Features Automatic Sorting Of Switching Times On Readout, Unrestricted Block Programming Of And Switching Functions, Fully Automatic Summer/Winter Time Changeover, Astro On And Off Times Are Corrected Daily With Actual Times Of Sunset And Sunrise, Offset Function For Each Astro Switching Time An Offset To The Astro Time Can Be Programmed That Applies Throughout The Year, Elapsed Time And Pulse Counter, Security By Pin Code.