This is the Phoenix Edge 160 50V High Voltage Brushless Electronic Speed Control with Fan from Castle Creations. FEATURES: Profiles can be custom designed on a PC with the Castle Link PC programming software (software not included, can be downloaded for free from Castle's website, voucher is included for free Castle Link Programmer) Compatible with giant scale fixed wing, and 700-800 class helicopters User programmable white auxiliary wire can be used for governor gain input adjustments, serve as an audible beacon after a crash, act as an RPM output for 3 axis gyros that support RPM sensors, and used as an ESC or receiver arming lock One year limited warranty through Castle Creations beginning at date of purchase INCLUDES: Phoenix Edge 160 50V High Voltage ESC with Cooling Fan and Instruction Sheet Voucher for Castle Link Programmer REQUIRES: Battery and motor connectors of modeler's choice SPECS: Input Voltage: 3S-12S LiPo Max Continuous Amps at Full Throttle: 160 Dimensions: 2.0 x 4.3 x 1.7" (50.8 x 108.4 x 43.2mm) Weight: 8.5oz (241g) with wires 5.6oz (159g) without wires