4X Racerstar RS20A 20A BLHELI_S OPTO 2-4S ESC Support Oneshot42 Multishot DShot for RC FPV Racing Drone

4X Racerstar RS20A 20A BLHELI_S OPTO 2-4S ESC Support Oneshot42 Multishot for FPV Racing Specification: ( Test Table) Brand Name: Racerstar Item Name: 20A BLHELI_S ESC Electronic Speed Controller Model: RS20A Con.Current:20A Peak Current(10s):25A Input Voltage: 2-4S BEC: No Programming : YES Firmware: Blheli_S Weight:7.9g Size(PCB):27*12mm Features: -With Blheli_s Firmware -Support Oneshot42 Multishot -Smaller size and lighter -Strong adaptive ability How to Flash the ESC? Please click here -Rev 16.2 Fixed bug that prevented temperature protection; -Improved robustness to very high input signal rates; -Beeps can be turned off by programming beep strength to 1; -Throttle cal diffirence is checked to be above required minimum before storing. -Throttle ca, max is not stored untill successful min throttle cal. Package Included: 4 x Racerstar 20A ESCs