Feature: 1. The controller ER-200 power storage system is seamlessly integrated with a simple door closing system. 2. The power supply voltage is automatically detected. The system is of high precision and easy to operate. 3. Adjust the direction of rotation of the servos to actuate the gear doors. Adjust the supply voltage of the servos actuating the gear doors. 4. The product is suitable for ER-200 electric retracting landing gear, good compatibility. 5. After connecting three sets of retracting on the controller, the system will automatically start the gate system. 6. The system will not be able to start the gate system if one of the three retract on the controller is not connected. 7. The system automatically recognizes the abandonment of port mode, but other retractions do not work. Specification: @font-face{ font-family:"Times New Roman"; } @font-face{ font-family:"宋体"; } @font-face{ font-family:"Calibri"; } @font-face{ font-family:"Arial"; } p.MsoNormal{ mso-style-name:正文; mso-style-parent:""; margin:0pt; margin-bottom:.0001pt; mso-pagination:none; text-align:justify; text-justify:inter-ideograph; font-family:Calibri; mso-fareast-font-family:宋体; mso-bidi-font-family:'Times New Roman'; font-size:10.5000pt; mso-font-kerning:1.0000pt; } span.msoIns{ mso-style-type:export-only; mso-style-name:""; text-decoration:underline; text-underline:single; color:blue; } span.msoDel{ mso-style-type:export-only; mso-style-name:""; text-decoration:line-through; color:red; } @page{mso-page-border-surround-header:no; mso-page-border-surround-footer:no;}@page Section0{ } div.Section0{page:Section0;}Item Type: RC accessoryCondition: 100% brand newName: Alloy electric retract system controllerMaterial: AlloyColor: RedPackage Weight: Approx. 30gPackage Size: Approx. 10x10x1cm/3.9x3.9x0.4inController:Working Voltage: DC 7.4V-8.4VController Size: Approx. 53x32x10mm/2.1x1.3x0.4inController Version: V-1DSuitable for ER-200 electric retracting landing gear Package List: 1 x ER200 Controller1 x Plug Cable Note: Manual measurement, please allow 1-3mm error, thank you This electric retract system control box needs to be operated with for Hobby electric retract device.