It is used to start up the unit and regulate flow.
The double-tank box is made of black plastic and features 2 indicator lights, 2 sowing/ventilation switches and 2 potentiometers:
Two green indicator lights,
An on/off switch to control the blower,
On/off switch to control dispensing,
Two flow rate potentiometers graduated from 0 to 30 for each dispenser.
Power supply harness included with the box: The box includes a 3-pin plug for power supply to the tractor with a 1.5-meter harness (2×2.5 cable) and a 7-pin plug for connection to the distributor (4×2.5 cable) with a 6-meter harness.
