This is the Sangamo RPTS Q550.13 solar dial time switch 3 pin with 24h programme and 1 or 3 ON/OFF operations per day; you can locate where you are on the map of the British Isles and add the number at the end to select the equivalent zone. The ON operation tracks the SUNSET, while the OFF can be made either to track SUNRISE or to occur at a fixed time between 8.30pm and 1.00am.
It is a "day ommission" device which allows you to select any number of days in the week on which the switching cycle can be disabled.
Ideal for applications which require control linked to sunset and sunrise times, scuh as street, stairwell, and security lighting. Once you set the timer, the switch tracks the sunset and the sunrise throughout the year, without the need for sensing the light levels. This removes any installation or maintenance problems associated with the photo sensing devices, since this solar time switch can be left to operate unattended for years.
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