Multiple issues with the RFID box.
1. They claim Made In Germany. But box says "China". The English in the item description is a hint itself.
2. They claim white wire puts out battery voltage when activated. But it puts out 3V less. So at 12V on the bus, you get only 9V. Beware of relay choice.
3. They claim item is new. Mine came used with the seal broken on the bottom screw.
Dismayed and frustrated. But it's not worth returning and paying shipping, I'll just keep it. But be forewarned.