GRAUPNER Voltwatch 12V

Quickly and easily check your field battery voltage levels with the Graupner Voltwatch 12V.  No more deep digging through your field box to reach tricky battery terminals – this affordable solution is easily connected to the field battery via the lead input and can be mounted to the outside of any field box, providing instant voltage readings with highly-visible LEDs at the push of a button.    A must-have for busy modelers.