Racerstar RS20Ax4 V2 20A BB2 48MHz Blheli_S 2-4S Opto Oneshot42 Multishot 4 in 1 ESC

http://www.banggood.com/Racerstar-RS20Ax4-V2-20A-BB2-48MHz-Blheli_S-2-4S-Opto-Oneshot42-Multishot-4-in-1-ESC-for-FPV-Racer-p-1080541.html?rmmds=search

and

http://www.banggood.com/Racerstar-RS30Ax4-V2-30A-BLheli_S-BB2-2-6S-4-in-1-ESC-Support-Oneshot42-Multishot-for-FPV-Racer-p-1083189.html?rmmds=search

I have many of these and will write about them soon