This is the Traxxas EVX-2 Electronic Speed Control with Reverse.

FEATURES: For 16 volt dual battery, dual motor setups
          Three programmable drive profiles
          Full-proportional reverse with brakes
          EZ-Set push button setup
          Waterproof design for running in mud, snow and other wet running
            conditions
          Low voltage detection for use with LiPo batteries
          Traxxas high-current connector

INCLUDES: EVX-2 ESC with Motor and Battery Wires, Receiver Wire, six Capacitors
            Instructions and two Mounting Screws

SPECS:    Input Voltage: 6-14 NiCd, NiMH OR 2S-4S LiPo
          Case Size: 2.27 x 2.0 x 1.05" (58 x 51 x 27mm)
          Weight: 4.1oz (116g) w/heat sink, 3.6oz (102g) w/o heat sink
          Motor Limit (550 size): 12 turns
          On Resistance Forward/Reverse (@ Trans): 0.004 Ohms
          Rated Current Forward/Reverse: 180 amps
          Braking Current: 360 amps
          Continuous Current (@100°F amb.): 30 amps
          BEC Voltage: 6.0 volts DC
          BEC Current: 2.5 amps
          Power Wire: 14 gauge/3" (76.2mm)
          Input Harness Wire: 26 gauge/ 9.5" (241mm)
          Transistor Type: MOSFET
          PWM Frequency: 1700 Hertz
          Protection: Thermal shutdown
          Single Button Setup: Yes

                                                                   jxs 06/11/12
                                                                         ir/jxs