JHEMCU ELRS-2G4-P is a miniature receiver for 2.4GHz frequency and ExpressLRS system. ExpressLRS is an open-source project that promises reliable long-distance transmission, low latency and high refresh rate. You can read more on the
project website.
JHEMCU ELRS-2G4-P supports 5 PWM channels, where channels 1-4 are full resolution, channel 5 is for switches. Channel 5 also serves to supply the receiver with a voltage in the range of 4-10V. The receiver also supports classic serial output with CRSF protocol for ELRS.