Combine Photo control with Other Methods
Unless the application needs continuous lighting all night, combine photo controls with other controls that turn off the lights during selected hours of darkness. To turn the lights on or off at specific times, combine with time controls, as recommended by Measure 9.5.1.If you provide any manual control, be sure to install effective control placards. See Measure 9.4.1 for guidance. Also, tell tales lights (Measure 9.4.5) are valuable with manually controlled exterior lighting.