ESC: The maximum rated value of all FETs is 20A, supporting motors such as 6x15mm/7x20mm/8x20mm/8.5x20mm, etc Size: 26mm x 26mm, compatible with for Horizon Inductrix racks and a range of Tinywhoop racks such as for E010/011/ H36, for Kingkong TINY6, etc Firmware version: AlienwhoopZer0 Compared to V1,V2 has the following changes: Add OSD to display battery voltage,power ,and low voltage alarm,which only supports 1S batteries and no longer supports 2S Add battery reverse insertion protection,and the reverse insertion of the battery no longer burn the flight control. Support MOS transistors with higher current,single circuit support for 20A current. Separate power supply for gyroscope. Only supports 1S batteries,not 2S batteries. Usage:After the receiver is paired, the flight control blue light changes from slow flashing to fast flashing and then becomes constant on.The remote control sets 2 section switches as unlock switches for channel 5,and 3 section switches as mode switches for channel 6,corresponding to manual,semi self stable,and self stable modes Blue light flashing status analysis: 1. Single slow flashing,receiver not frequency aligned,or flight control does not support this receiver 2. After flashing quickly,it turn on normally,and after unlocking the 5-channel switch,it flash quickly. The minimum throttle value is 1000, or the throttle channel is incorrect. The correct channel order is AETR 3. Flash continuously for 3 times,continuously cycling, low battery voltage 4. Continuous flashing for 4 times,continuous cycling, gyroscope malfunction Colour:As Shown Material:PCB Package Contents: 1 * Controller Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.