This system designed for the model airplane weight less than 3kg with simple operation and installation features. 

Specification:
● Voltage supply: 5 - 6v
● Idel current: 20mA
● Activate current: 260mA (5 sec)
● Lock up current: 1.6A (3 sec)

Instructions:
● Connect the extension cable between retract & control unit.
● Plug in the control unit to retract channel of the receiver.
● Press Testing button to confirm the operation.
● Unplug and reverse the connector if UP/DOWN operation reversed.
● Turn on radio to active the retract.

 NOTE: The motor may bind while statring. Repeat the operation unit the motor activate.