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Flexchargeâ„¢ Night Watchman Dusk To Dawn Controller 

Print this pageNight Watchman Photo 
This unique product was started as the pet project of our chief engineer at Flexcharge.  As a cruising sailor he found that he was often thinking more about getting underway in the morning than turning the mast head anchor light OFF.  This of course used a substantial amount of battery power lighting the lamp all day. The Night Watchman is designed to be mounted outside in a marine salt air environment.  It is completely waterproof, and very small (1" x 1" x 1") for mounting in an inconspicuous location.

Because power consumption is always a concern on battery powered systems, (sail boats, PV systems, etc.) the Night Watchman is designed to use an extremely small amount of power in standby mode (only 0.00015A or 0.15mA), yet it is capable of supplying up to 10A of load current.

With boring repetition the Night Watchman will turn 12V incandescent, LED or fluorescent lights ON in the evening within a half hour of sunset, and OFF in the morning within a half hour of sun rise. 

The Night Watchman's circuitry is designed to prevent flickering therefore it can be used to control 12V fluorescent lamps and all other lamp types including LEDs. 

Feel free to go ashore during the day and stay all night.  Your mooring light will turn ON and OFF protecting you vessel as required.  Many applications have developed since the original marine use.  Signs, yard lights, cabins, etc.  Works on any load within the 10 amp rating including motors.  Larger loads can be controlled by using a relay controlled by the Night Watchman.  When used in conjunction with our 12 volt Programmable Timer you can have dusk to dawn control along with an OFF time during the night.

Other great uses for the Night Watchman 

  • Use for Boat, Cabin, and Spreader lights too  
  • 12V Motor Home / RV lights  
  • Yard and Porch 12 volt lights 
  • Solar lighting system's lamp controller 
  • Motor operation such as Chicken coop doors etc.  
  • Automatically turn ON low level lighting when Night Watchman senses that High level lighting in the area is turned OFF. 

 Where to buy

 Night Watchman Installation.pdf

 Flexchargeâ„¢ controllers are the controllers of choice for research projects around the world.

Sensitive data recording equipment is not affected by the Flexcharge Controllers because there is no RFI generated in the controller as is common on many others.

Extremely high efficiency was a design goal for all Flexcharge controls.  Little or no heat is dissipated from the controllers so all of the generated energy can be used.

No matter if your system is a simple battery maintenance system or a large main power source, you will benefit from the efficiency and dependability of our products.