This is PN Racing MR03 Setting V2 RC Printed Circuit Board Assembly Compatible with Spektrum DSM2 Transmitter.
V2 version fixed some minor issues, and the soldering tap of power +/- is longer.
PN Racing MOSFET 2x2 Pre-Installed, capable of running up to 31T brushed motor. Recommend for use with 4 x AAA NiMH battery
Not for use with LiPo or LiFe battery
3 Pin plug for optional 3rd channel, Gyro function not available
Regarding power switch removal, power + (red) short to the power switch terminals
PN Racing MR03 Setting V2 RC Printed Circuit Board Assembly (1 pc)