... products can adjust all kind of the RED4 Electronic speed device in-line pump made by ... one. The product adopts the wide output power switch, high-speed AMP7 main control Chips, integrated Circuits ... along with test EDC itself, Open the power switch, then open RED4 Power, the corresponding indicator ... through the arrow ↑ ↓. Close the RED4 POWER switch, oil pump power off. Press Select button, indicator ...