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Type 11.91 Light Dependent Relay “twilight switch” for the automatic control of lighting according to the ambient light level – using a separate photosensor.

Auxiliary output, for use with 19.91 Power Module, provides an output directly related to the light level (i.e. without intervention of any time delays).

Features include:

“Daily” time switch function – programmable to inhibit main output (for energy saving)

Auxiliary output – directly driven by the photosensor

Italian patent “Light feedback compensation” principle

Sensitivity adjustment from 1 to 150 lux

LCD display for status indication, set-up and programming

Internal battery for set-up/programming without supply and for time/program back-up in case of power failure (5 years)

Low stand-by power consumption

SELV separation between contact and supply circuit

Double insulation between supply and photosensor

35 mm rail (EN 60715) mount

Cadmium-free contact material

Cadmium-free photosensor (IC photo diode)