This product is used for electric unlimited remote control four-wheel electric skateboard.Four gear positions: 1. low speed; 2. medium speed; 3. high speed; 4. player mode. electronic brakes (the battery will be when the brakes slide downhill). One button forward/reverse direction. Wireless 2.4G remote control transmission control. 20 frequency points. Automatic frequency hopping anti-collision.low speed and high torque. Three-mode control, four-wheel brushless controller integrated.The first mode: Hall sine wave (automatic learning motor). The second mode: no Hall square wave (compatible with 99% motor on the market including non-inductive mode motor). The third mode: Hall sine wave fault repair mode (when the motor 3 are broken, the program will check and repair the fault Hall after the program is checked. If the motor 2 Hall is broken, the program will automatically switch to No Hall square wave mode) The program has a Hall repair. Hall broke a normal operation / ZE string wave, does not affect normal use. Motor line short circuit protection. Motor line off protection / stall protection / maximum current protection / battery under voltage protection / over current / over voltage / overload limit current protection. Under-piezoelectric buzzer alarm: a total of four alarm sounds, (drop a 40% power) (drip two 30% power) (drip three sound 20%) (drip four sounds 10% Power) After four , it will enter undervoltage protection, effectively protecting the battery from over-discharge and damaging the battery.The same is true for the remote control low voltage alarm. Matching the Bluetooth mobile phone APP port, you can set various parameters of the control panel, and the remote control has two-way communication. Remote control matching instructions:When the host is powered on,press the matching remote control button on the mainboard(the button is to the buzzer)or press and hold the power button for 10 seconds.When the long red LED flashes,the host is for the remote pairing.When you press the remote control hidden button( to the remote control switch),the LED light of the main board and the LED of the remote control will flash at the same time,and the remote control matches successfully Using the sine wave scheme, the performance is more stable than the ESC, and it is not easy to burn out Two-way communication, you can check the power of the skateboard through the remote control Low-voltage alarm function, under-voltage power-off protection function Note: The voltage is different, the alarm voltage and the protection voltage are different Carrying weight:less than equal 120KG Application areas:scooters, unicycles, twisting cars, balance cars Type:For Belt Program Colour:As Shown Material:ABS Package Contents: 2 x Motherboard 1 x Remote control 1 x Accessories 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.