This is the E-Flite 20-Amp V2 Brushless Speed Control.  E-flite's brushless ESC include improved BEC capability, programmable voltage cutoff programming options such as auto-select cut-off voltage that automatically recognizes Lipo batteries or a Ni-CD/Ni-MH programable feature,  programmable braking, thermal overload protection, advanced software and gold bullet connectors.

Key Features

• Programmable motor braking
• Programmable voltage cutoffs for 2-3 Cell Li-Po or 6-12 Cell Ni-Cd/Ni-MH packs
• Up to 20-Amp continuous current with proper air flow
• Dual BEC regulators for use with up to 4** servos when using 3-Cell Li-Po and 10-Cell Ni-Cd/Ni-MH packs
• Automatically sets correct motor timing
• Safe power-on mode prevents accidental starts
• Includes gold bullet connectors and extension wire leads for your motor

Specifications:
Brake: Yes, programmable
Continuous Maximum Current: 20A
Input Voltage: 7.2V-14.4V Ni-Cd/Ni-MH; 7.4V - 11.1V Li-Po
Dimensions (WxLxH): 36mm (1.4 in) x 24mm (.95 in) x 9mm (.37 in)
BEC Voltage: Dual BEC circuits
Auto Cutoff: Programmable