HobbyKing 40A BlueSeries Brushless Speed Controller (FS00634)

Its no “Mystery” where these ESCs are made, now they are available to you at HobbyKing prices.

Built with imported N-Channel mosFET's and an ultra fast Atmel MCU & heartbeat make this a high performance ESC with excellent sync capabilities. This ESC has a 4A SBEC for solid reliable servo power.
Programmable via an R/C controller.It allows you to program all functions to fit your specific needs, which makes it efficient and user friendly.
 
Features: 
Extremely low internal resistance 
Super smooth and accurate throttle linearity 
Over heat and over-load protection 
Auto shut down when signal is lost or radio interference becomes severe for more than 2 seconds 
Supports high RPM motors 
Power arming protection (prevents the motor from accidentally running when switched ON) 
New Advanced programming software
 
Programming features:
Brake setting (we recommend using brake for only folding props applications)
Battery type(LiPo or NiCd/NiMh) 
Low voltage cutoff setting 
Factory default setup restore 
Timing settings (to enhance ESC efficiency and smoothness) 
Soft acceleration start ups (for delicate gearbox and helicopter applications)
Governor mode(for helicopter applications) 
Motor rotation( clockwise\counterclockwise) 
Switching frequency 
Low voltage cutoff type (power reduction orirnmediate shutdown)
 
Factory default settings:
Brake:  off 
Battery type Detect:  LiPo with Automatic Cell 
Low voltage cutoff threshold:  Medium (3.0V/65%) 
Timing setup:  Automatic 
Soft Acceleration Start Up:  Medium 
Governor mode :  OFF 
Frequency :  8kHz 
Low voltage cutoff type:  Reduce power

Spec.
Cont. Current: 40A
Burst Current: 60A
Battery: 2-6 Cell Lipo / 5-18 Cell Ni-XX
SBEC: 5.5V/ 4A Output
Size: 52*23*7mm
Weight: 30g