Danlers Ceiling Flush Mounted Photocell Switch Reset On Type
Built-in time delay of 1 minute avoids unnecessary switching.
For saving lighting energy in offices, factories, sports halls and so on. For flush mounting through suspended or plasterboard ceilings. Complete with 2m cable for quick and easy installation.
This 'Re-set' version switches the lights off when there is sufficient ambient light but requires the wall switch to be operated in order to switch on. In this way the lights only switch on when demanded.
Built-in differential ensures the artificial lights do not affect the photocell.