Item Type: RC accessory_x000D_ Condition: 100% brand new_x000D_ Name: Alloy electric retract system controller_x000D_ Material: Alloy_x000D_ Color: Red_x000D_ Package Weight: Approx. 30g_x000D_ Package Size: Approx. 10x10x1cm/3.9x3.9x0.4in_x000D_ Controller:_x000D_ Working Voltage: DC 7.4V-8.4V_x000D_ Controller Size: Approx. 53x32x10mm/2.1x1.3x0.4in_x000D_ Controller Version: V-1D_x000D_ Suitable for ER-200 electric retracting landing gear 1The controller ER-200 power storage system is seamlessly integrated with a simple door closing system. 2The power supply voltage is automatically detected. The system is of high precision and easy to operate. 3Adjust the direction of rotation of the servos to actuate the gear doors. Adjust the supply voltage of the servos actuating the gear doors. 4The product is suitable for ER-200 electric retracting landing gear, good compatibility. 5After connecting three sets of retracting on the controller, the system will automatically start the gate system. 6The system will not be able to start the gate system if one of the three retract on the controller is not connected. 7The system automatically recognizes the abandonment of port mode, but other retractions do not work.1 x ER200 Controller1 x Plug CableManual measurement, please allow 1-3mm error, thank you!_x000D_ This electric retract system control box needs to be operated with for JP Hobby electric retract device.