Comparison page

JDY-31 vs RA-02H

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.

JDY-31

Projects needing Bluetooth and UART with a commonly available communication part.

RA-02H

Projects needing LoRa and Sensor network with a commonly available communication part.

Specification Matrix

DimensionJDY-31 RA-02H

CategoryCommunicationCommunication

MakerJDYAi-Thinker

CoreNot specifiedNot specified

ClockNot specifiedNot specified

WirelessNot specifiedNot specified

Voltage3.3V3.3V

LibrariesArduinoArduino

Price$1.00 - $3.00$2.00 - $6.00

Known Tradeoffs

JDY-31

Breakout boards may use different pin labels or regulator choices
Clone modules can differ from the original datasheet part

RA-02H

Breakout boards may use different pin labels or regulator choices
Clone modules can differ from the original datasheet part

Open Individual Model Pages

JDY-31

JDY

Low-cost Bluetooth serial module sold in Chinese marketplaces as an HC-05-class alternative.

China-madeCommunication66% confidence

RA-02H

Ai-Thinker

Ai-Thinker LoRa module used in hobby and sensor-network prototypes.

China-madeCommunication72% confidence