Maytech 40A OPTO Slim ESC Electronic Speed Controller with BLHeli firmware for rc remote control multirotor quadcopter

 http://www.leadrc.com/goods.php?id=320

Specifications

1. Slim ESC Pre-flash the BLHeli Firmware
2. Parameters pre-set for multi-copter flight
3. Throttle Calibration can be done 

MT40A-OPTO-BL-MK

Application.................................................................RC Multirotor

Cont.Current............................................................. 40A

Lipo..............................................................................2-6Cells

Burst Current(10sec)..................................................50A

Net Weight..................................................................25g

BEC..............................................................................N/A

PCB Size(mm)(W x H)................................................17.5*3

Programe Device........................................................Transmitter

Any Further Question, please Contact us via service@leadrc.com

Or QQ: 2851760603   Skype: lead.rc    (on the bottom)
 
Both are available