Features: 1Has the function of low?voltage cut?off to prevent excessive discharge of lithium battery. 2RC electronic speed sensorless brushless ESC programming card. 3Designed for brushless ESC, wonderful and practical RC car acessory. 4Three?layer starting mode: ordinary, soft and strong, meeting different demands. 5This product is made of high quality plastic, which is durable and reliable. Condition: 100% Brand New Item Type: RC Car Program Card Material: Plastic, Electronic Components Size: Approx. 61 x 48 x 6mm / 2.4 x 1.9 x 0.2in Low Voltage Cutoff Voltage: 3.1V, 2.8V, 3.3V, unprotected (default value: 3.1V) Starting Mode: Ordinary, soft and strong. Maximum Reverse Force: 25%, 50%, 75%, 100% (default value: 25%) Neutral Range: 9% (narrow), 6% (normal), 12% (wide) (default 9%) Maximum Braking Force :(25a, 45a, 60a) 50%, 25%, 75%, 100% (standard value 50%, 80a, 120a) 25%, 50%, 75%, 100% (standard value 25%) 6: Connect the BEC connection line according to the color direction. 7: The above 1~5 red indicates the default setting of the Electric modulator. Method Program Card: 1. Connect the B and W lines to the programmer, and then open ESC. (80A 120120A press the unused key) 2. The green LED flashes twice, and then closes the LED, that is, successfully connected to the ESC programmer, and the red LED displays the current value item. Otherwise, the connection fails. 3. Please press Go to select a different program 4. Press Go to select the different values of the current program 5. Please press the Program button to confirm the above selection, and the green color will immediately light up and leave within 5 seconds, that is, the process is successful. 6. Please press the reset button for factory data reset Package Included: 1 x RC Program Card