No need to use transmitter or receiver with this item

Function
• Adjust the neutral of the servos.
• For testing Speed controller.
Instruction
• For servos please connect to S1 or S2.
• Battery connect to BATT (4.8V~6V) only when using on servos need battery.
• For Speed Controller please connect the BEC lead to S1 or S2, and make sure the adjuster has turn all the way to left 0 as lower end throttle.