PowerBox Sensor Switch V3 With MPX / JR Connectors 6v or 7.8v Switchable Output 6332PowerBox Sensor Switch V3 With MPX JR Connectors 6v or 7. 8v Switchable Output 633 The PowerBox Sensor V3 is the third generation of the PowerBox Sensor, which is well known throughout the world. For almost twenty years the PowerBox Sensor has represented the standard for small to medium sized models thanks to its compact format and versatility. By using the latest components we have been able to reduce the size of the Sensor V3 significantly. For