Comparison page

CP2102 vs HC-05

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.

CP2102

Projects needing USB UART and Reliable with a commonly available communication part.

HC-05

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

Specification Matrix

DimensionCP2102 HC-05

CategoryCommunicationCommunication

MakerSilicon LabsGeneric

CoreNot specifiedNot specified

ClockNot specifiedNot specified

WirelessNot specifiedNot specified

Voltage3.3V3.3V

LibrariesNeeds verificationArduino

Price$0.80 - $2.00$1.50 - $4.00

Known Tradeoffs

CP2102

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

HC-05

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

Open Individual Model Pages

CP2102

Silicon Labs

USB-to-UART bridge widely used in development boards and debug adapters.

China-madeCommunication86% confidence

HC-05

Generic

Classic Bluetooth serial module used for Arduino UART wireless control demos.

China-madeCommunication72% confidence