This card is only applicable to the models sold in our shop. Water-proof and dust-proof for all-weather races; (Note: please uninstall the cooling fan before using this ESC in water; Clean and dry it soon after the use for avoiding the connectors get rusty.) External programming port, easy to connect to the Program Card when setting the ESC; Proportional brake with 4 steps of maximum brake force adjustment and 8 steps of drag brake force adjustment; 9 steps of acceleration(punch) adjustment from "soft" to "Very aggressive" to fit for different kinds of models, tires and tracks; Multiple protections: Low voltage cut-off for protection / Over-heat for protection / Throttle signal loss for protection / Motor lock-up for protection; One-button(the "SET" button on the ESC) to set the ESC, and easy to reset all parameters to the factory default settings; for the optional device-the portable Digital LED Program Card, especially convenient for outdoor use. Instuctions 1. Connect BEC wires with the receiver 2. Connect motor wires with ESC 3. Turn on the transmitter 4. Connect battery pack with ESC then switch on the ESC. 5. When the connection of motor and battery is finished, the motor emits"Beep-Beep"tone. 6. When the throttle stick is in the neutral position, the motor re-emits "Beep-Beep"tone. 7. The ESC is workable. Package information: Package size: 8.1* 5.5*1.2cm/3.18*2.16*0.47in Package weight: 32g Package Including 1 * RC Program Card