MCU: ATmega8A, Frequency: 16MHZ

Input voltage range: 5.4V ~ 9V

Low dropout voltage: 250mV @ 500mA, 450mV @ 1A

Onboard high-performance dual 2A independent MOSFET H-bridge motor driver

An external PWM control signal

Bluetooth module interface (standard Otani Electronics Bluetooth module) can be used with cell phones, computer communications

Onboard USB to serial chip, compatible with Arduino.

MOSFET anti-reverse circuit

Abundant power, signal interface, IO port all leads. Facilitate the development .

https://www.generationrobots.com/media/RS027-mini-driver-instruction-manual.pdf