Flycolor Fairy Series 20A\/30A 2-4s 4 in 1 BLHeli ESC W\/ Integrated F3 Flight Control For MulticopterThe board without an Flight Control mounted on it:Note: The Flight Control  has a buzzer on it.Specification:Brand name: FlycolorItem name: 4in 1 ESC                 Item           Continuous current        Burst current            Fairy 4in 1-20A        20A        30A            Fairy 4in 1-30A        30A        40A    Voltage: 2 - 4S Lipo BES: No Product weight: 47.2 g  Size: 102*43*15 mm Typical application: suit for 210-330 RC Multirotors  Features:   1. faster response、smaller size and weight   2. excellent rotation-clogging protection     3. support ordinary throttle mode and Oneshot125 throttle mode.     4. Elf upgraded version of IC drive power transfer、 the reaction faster、 smaller and lighter.       5. Support BLHeli program. Alternatively Damped light mode、 more efficient and significantly improve throttle response speed  Integrated power supply board 5V3A、 12V1ABEC and battery voltage (BATV) power supply、 easy to image transmission、 camera power supply LED lights.  6. Free electrical connection transfer signal line、 to reduce hunger in the interference signal transmission within the copper produced、 make flying more stable.  7. 4 in 1、Power Board \/ ESC \/ flight control highly integrated one、 flight control、 power transfer、 power supply board can be individually removable、 light weight、 good performance  Package included: 1 x 4in 1 ESC 1 x Flight control 4 x Nylon spacer M3*6+6 4 x Nylon nut M3 4 x Nylon screw M3*10