12V Dusk-To-Dawn Photocell Sensor W/Wall PlateLED products work very well with electrical controls such as dusk to dawn sensors, daylight harvesting controls, timers, etc. On the other hand, a compact fluorescent (CFL) requires a non electronic, or mechanical control. The problem using any control device with CFLs is voltage leak. Some photo controls actually leak a small amount of electrical current in the off position. The best way to test if your existing photocell is compatible with CFLs is