Switch the lights on when there is not sufficient ambient light available, and off when there is sufficient ambient light available.
For lighting energy saving in offices, factories and sports halls.
Built-in differential ensures the artificial lights do not affect the photocell. Built-in time delay of 1 minute avoids unnecessary switching.
For surface mounting onto solid ceiling. Plugs into CESO SQ Ceiling socket (or CESO Ceiling socket). CESO SQ can be mounted on a square pattress box (or CESO can be mounted on a BESA box).
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Manual wall switch retained for overriding OFF
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