A For the electric adjustment with brake, the first time is the brake, and the second time is the reverse. It is generally used for vehicles with steering gear turning B Electric regulation without brake, direct forward and reverse rotation, applicable to similar tanks, turning with differential speed of two motors, and double paddle ships Voltage support: 4-8v can be directly connected to 2s lithium battery (7.4v) Current parameters: forward 30A, instantaneous 40A, Back 20A, Brake 40A<br><br>UBEC output: voltage 5.7V, current 1A. (Power supply for receiver and steering gear) Size: L25mm, W23mm, H5mm Weight: 13g (with wire) The default is] head with switch. Wiring: short red black → battery (dividend must be positive black negative) Long red black → motor (regardless of positive and negative) The ch2 of the black, red and white three wire → receiver (usually the black is outside, and the self color is on the sticker) Adjustment: the electric adjustment is in the middle range. The control usually needs to fine tune the throttle, so that the electric adjustment light does not light up, which is the middle position. The controlled throttle fine adjustment is TH TRIM Color: As shown Material: composite material<br><br>Package Contents: 1 * rc upgrade parts kit<br><br>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.