Feature: 1. SCOPE OF APPLICATION: 30A 4 in 1 brushless ESC is suitable for RC for FPV Racing drones, quadcopters. 2. PROGRAMMABLE: 30A brushless ESC is programmable and is an excellent choice for players interested in developing RC for FPV drones. 3. 6 LAYER THICKENED COPPER SKIN: PCB is made of high end 6 layer thickened copper skin for better over current capability and heat dissipation. 4. HIGH LOAD CAPACITY: RC brushless ESC adopts advanced high current resistant MOS, long life and high load capacity. 5. INDUSTRIAL GRADE LDO: Quadcopter brushless ESC adopts industrial grade LDO, high temperature resistance. Specification: Item Type: Brushless ESC Material: PVC Color: Black ESC Size: Approx. 36x36mm / 1.4x1.4in Continuous Current: 30A Peak Current: 35A (10 Seconds) Input Voltage: 7.4-22.2V (2-6S) BEC Output: 5V Firmware: Blheli S ESC Weight: 10g/0.4oz Application: For FPV Racing Drone, Quadcopter. Package List: 1 x Brushless ESC3 x Wiring2 x Accessory Note: 1. ESC integrated performance is more, the components are very dense, when installing, please do not use tools (such as incisive pliers or sockets) to screw the nut, easy to scratch the flying tower hardware to cause unnecessary damage. The correct way is to use your fingers to press the nut, screwdriver from the bottom to quickly tighten the screw can be. (Remember not to be too tight, so as not to damage the PCB board)2. Please allow some error due to manual measurement.