Controller input pulse width is 0.8ms--2.2ms, 1.5ms is the midpoint.The switch UBEC 5v 3A can drive two 25kg servos. It is not a 7805 linear regulator, so two ESCs cannot be used to power the receiver at the same time.After power-on, the led indicator flashes slowly for 3 times for self-test, and the steady light after self-test means normal operation.If the throttle is not in the middle position when power-on, the LED will flash intermittently. Then you need to adjust the throttle position to the middle point and the ESC can work only when the LED is always on .If the throttle signal is lost and the LED flashes quickly, the motor will stop.Note: If one receiver uses two ESCs at the same time, you need to cut off the red positive wire in the middle of the BEC signal wires of one ESC. One ESC can supply power to the receiver, and if two ESCs supply power to the receiver at the same time, it will be burnt.The ESC is not waterproof. you need to do waterproof by youself.(apply glue)Support forward backward, no brake.The power plug of the ESC is XT60 or T plug,The motor end plug is 4mm bullet plug ,single plug (one for one) or double plug (one for two)The ESC wire is 14AWG high temperature resistant silicon soft wire, high current copper wire.A total of 24 high-power mos on the front and back.H bridge, each road lower arm has 6 high-power mos.The forward and reverse power is the same, and it is not a design that reduces the reverse output power.The actual peak value of continuous current for both forward and reverse rotations is 100A, and the rated power of the ESC is 1000W.640A 860A is only the label of brushed ESC, not the actual current value, no real intention.Suggestion:12V voltage working condition: 3x 540 or 3x 550 or 2x 775 or 2x 795 or 1x 895 or 1x 997 motor.24V voltage working condition: 2x 775 or 2x795 or 1x895or 1x 997 motor.Model Number: 860ADimensions: 7.2x3.5x2.4cmESC working voltage 10.5v-26vMaterial:composite materialcolour:BlackPackage Contents:1 x rc speed controllerOnly the above package content, other products are not included.Note: Light shooting 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.