Roadside Units may not always get enough sunlight to operate continuously, especially during winter months when the sun is low and the sky is often overcast.  Location can also have a big impact on the light available.  While Roadside Units generate more results than you'd normally achieve with traditional /HGVwatch teams, you might find you want more up-time from your unit.  If so, then this solar boost option is ideal. 

This option significantly increases the power available to AutoSpeedWatch and AutoHGVWatch Roadside Units for better up-time during dull-winter days.  It does this by adding a second solar-panel pre-set at an angle optimised to harvest power at UK latitudes, especially during winter. 

A horizontally mounted solar panel (as integrated on Roadside Units) can't harvest more than a quarter of the energy available at the winter solstice, due to the low angle of the sun.  This solar power boost option increases the power harvested at solstice more than 4 times, meaning that you will have more daytime operation during the winter.

Complete with fixing band (please select size needed), and cable ties for tidy installation.  Please use tools provided with original unit, or add these should you need them.  Size is approx 185mm x 195mm x 140mm.  Safe low voltage.