Features:1. Power is switched on and with potentiometer speed regulation function, with blocking rotation protection function. 2. The use of authentic components to the high quality of the electrical controller, especially excellent current resistance. 3. Support internal and external rotor motor, 500-2700KV and other high KV motor. 4. Mini size and light weight make the installation more convenient. Specification: Electric Current: A: 20A Support voltage: 7-26V Batteries supported: 2-6S LiPo Power cable (silicone cable): 18AWG 80MM Signal cable (silicone cable): 120MM PCB size: 24MM x 12MM Material: plastic+metal colour: As shown Package Contents: 1 x Brushless Motor Driver 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.