You may consider the “Castle Link USB Programming Kit”, it is a real asset when it comes to programming and updating firmware.

May not be exactly as shown.

The Phoenix-25 is the workhorse of many a modelers fleet, and a favorite choice of 3D foamy pilots. Still small and light enough for indoor and parkflyers, but capable enough for high performance wings with Speed 400 size brushless motors. Your Mega 16/15 series, Feigao and Himaxx 28mm motors, small and medium sized AXI motors, and Hacker B40 motors will all perform at their peak with the Phoenix-25.

Cells w/BEC 5-10
Cells w/o BEC 5-16
Continuous 25 amps
Switching Rate 11,000 hz
Resistance 0.0065 ohms
Brake Yes
Reversible Yes - change any two wires
Low Voltage
Cut-off Programmable
Size 1.08 x 0.91 x 0.16"
Weight (w/wires) 0.6 oz (17g)
Connector Type Universal

Castle Creations speed controls feature:
-Battery Eliminator Circuit (BEC): eliminates receiver battery
-Safe "Power On"
-Microprocessor Controlled
-Tough surface mount construction
-Audible Arming Signal
-Auto Motor cut-off with reset
-Low torque "Soft Start": protects gear boxes and belt drives from shock
-Smooth reverse exponential throttle
-Self-calibrating endpoints: maximizes usable stick travel
-Auto shut-down when signal is lost
-Simple setup: no complicated switches
or wiring