- 1.77 PWM output and 3.5 serial port; SBUS counts as half a serial port. - 2. Does not provide analog ammeter function; external I2C protocol ammeters supported. - 3. Can be directly inserted into the ELRS receiver, ultimately reducing size. - 4. Battery voltages output via SH1.02P interface; battery voltages output at the same time for direct port power supply and clear map transmission; supports up to 6S input. Use scenarios - In a compact FPV drone or racer, install this module directly with the ELRS receiver to save space while maintaining PWM control and SBUS compatibility. - For RC airplanes or multirotors that rely on SBUS or limited serial resources, use this unit to maximize port availability without adding bulk. - As a small power and voltage-sensing hub for up to 6S batteries, it provides synchronized battery voltage outputs to direct ports while supporting power delivery.