Astronomical Timer Switch

Astronomical Timer Features

  • Real time clock with inbuilt battery with life of more then 8 years with the accuracy of +/- 60 second per month
  • Street light ON / OFF on Longitude, Latitude base sunset and sunrise time generation Astronomical algorithm with 1 minute resolution
  • Inbuilt auto recovery systems for power failure which helps in streetlight operation
  • Month wise programmable civil twilight timings helps to decide precise ON / OFF timings in all weathers
  • Password Protection
  • Scrolling display of events which helps to monitoring the systems
  • User friendly key board operation
  • Auto / Manual facility by way of relay operation for faster service mode
  • User settable On Delay up to 99 minutes between R Y & Y B phase
  • Settable Individual lines Staggering facility to switch OFF and switch ON lights by late night can save energy when there is no traffics. (Can switch off one phase at 10 P.M. and another phase at 1 A.M.)
  • Eight Date range programming facility to disable staggering mode for festival and special occasion
  • Manual stagger off facility for special requirement
  • Rotational staggering system to ensure equal burning of each luminary
  • Power redundancy - controller works till any one phase healthy
Astronomical chart for Ideal street light operation
Astronomical Timer Panel

Astro timer Application

  • Hoarding Light
  • Staircase Light
  • Compound Lighting
  • Township Lighting
  • Industrial Lighting


Astronomical timer saves 4 TO 8 % energy. In normal scenario as total burning hour of a luminary is between 4200 to 4300 per year, while astro timer works for 4040 to 4100 hours/year.

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