This is the 30 Amp ESC for the Sensei RTF and Rx-R from Flyzone.
Features: Stock replacement ESC for the brushless motor supplied with the RTF Sensei trainer
Includes: 30 Amp ESC shrink-wrapped and prewired with motor, receiver connector and SuperTigre battery connector
Length: 2.4 (60mm)
Width: 1.02 (26mm)
Thickness: 0.51 (13mm)