Comparison page
CH343P vs E22-900M30S
Side-by-side selection notes for specs, ecosystem readiness, known issues, and data confidence. This page is generated from structured component fields instead of a hand-written article.
CH343P
Projects needing USB UART and Low cost with a commonly available communication part.
E22-900M30S
Projects needing LoRa and High power with a commonly available communication part.
Specification Matrix
CategoryCommunicationCommunication
MakerWCHEbyte
CoreNot specifiedNot specified
ClockNot specifiedNot specified
WirelessNot specifiedNot specified
Voltage3.3V3.3V
LibrariesNeeds verificationArduino
Price$0.30 - $0.90$6.00 - $18.00
Known Tradeoffs
CH343P
- Breakout boards may use different pin labels or regulator choices
- Clone modules can differ from the original datasheet part
E22-900M30S
- Breakout boards may use different pin labels or regulator choices
- Clone modules can differ from the original datasheet part