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Photocontrol Glossary

Suitable for outdoor street lights, corridor lights, courtyard lights and other LED lighting light controller components, to achieve sunrise bright and out of the surrounding environment, sunset around the dark environment

TIME DELAY:

A device that delays a control response by a period of time. Prevents sudden changes in the ambient light level

from turning a fixture off during night-time operation.

TURN-OFF AND/OR TURN-ON RESPONSE TIME:

The time between a rapid change in light level and the switching of the load. Turn-Off delay may be different

than turn-on delay.

TURN-OFF / TURN-ON RATIO:

The turn-off light level divided by the turn-on light level.

TWIST-LOCK:

A three-prong locking type of electrical plug commonly used with photocontrols to prevent the power source and

the photocontrol from being accidentally disconnected.