Dual sensing - Charge from the start and auxiliary allows access. The VSR detects the voltage of both the start & auxiliary allowing it to engage or isolate depending on the battery's voltage level.
“Good quality. Only used it for the first time today and the light came on after about 30 seconds and ran an Engel car fridge all day from the second battery . Hopefully I won’t ever have a flat starter battery again”
“Have installed and tested the VSR , all as clearly set out in directions , 100 pc. good ! However the package had been damaged and one side of fastening flanges was broken .
I did not open the package on delivery - my fault - glued the broken bits back together an all is well , as stated before , maybe a bit of fill in the box might have saved it ?
Kind regards
Aksel”
