Danlers CEFL PHRE Ceiling Photocell Switch (2m lead wire)
from Danlers (Model: CEFL-PHRE)
An Energy Saving, flush mounted Photocell sensor switch that is ideal for use in offices, factories, schools and the like. Fitting neatly into suspended and plasterboard ceilings this switch turns lights off when there is sufficient ambient light but require the wall switch to be operated in order to switch on. In this way the lights only switch on when they are demanded. A built in time delay of 1 minute avoids unnecessary switching.
for Danlers CEFL PHRE Ceiling Photocell Switch (2m lead wire)