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DSD TECH HC-05 Classic Bluetooth 2.0 Serial Wireless Module for UNO R3 Nano (Basic Version)
DSD TECH

DSD TECH HC-05 Classic Bluetooth 2.0 Serial Wireless Module for UNO R3 Nano (Basic Version)

Bottom line: The DSD TECH HC-05 Classic Bluetooth 2.0 Serial Wireless Module: Master/slave 2-in-1 firmware, so one module covers both ends of a link; main trade-off: bluetooth 2.0 classic only, so no iPhone or iPad control.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

Pros & Cons

Pros

  • ✓ Master/slave 2-in-1 firmware, so one module covers both ends of a link
  • ✓ Wide 3.6V-6V operating range works on UNO R3 and Nano rails directly
  • ✓ Ships with a 6-pin Dupont cable, no separate wiring purchase
  • ✓ Onboard button drops into AT mode for baud and pairing changes
  • ✓ DSD TECH backs it with 1-year replacement and 1-working-day replies

Cons

  • ✗ Bluetooth 2.0 classic only, so no iPhone or iPad control
  • ✗ Needs a separate BLE module like the SH-HC-08 for Apple projects
  • ✗ Defaults to 9600 baud and PIN 1234, so AT setup is required
  • ✗ AT commands only work in AT mode, adding a step for every config change

Manufacturer description

The Core module is HC-05 bluetooth 2.0 serial module. By using this HC 05 Bluetooth module , you can quickly add Bluetooth features to your wireless DIY Project. The factory setting is slave mode, but you can set this module to master mode so that you might be able to connect to other Bluetooth 2.0 devices.Please note:This is a classic Bluetooth 2.0 module , it is not compatible with iphone or ipad. If you need to use iphone or ipad to control your DIY project. You may need a Bluetooth 4.0 BLE module (such as SH-HC-08 Bluetooth 4.0 ble module)How to enter the AT command modeWay 1:Step 1…

SpecPicks Verdict

SpecPicks scored DSD TECH HC-05 Classic Bluetooth 2.0 Serial Wireless Module using a rating × review-volume × price-fit model applied to published specs and reviews across the tabletop & card games category. DSD TECH's tabletop & card games lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for tabletop & card games of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • HC-05 Wireless BT Module: with this HC 05 Bluetooth module,You can quickly add the Bluetooth feature to your DIY project, and then you can use your android phone to control some gadgets, such as: switch, LED.
  • Master and Slave 2-IN-1 HC 05 Module:Working Voltage 3.6V to 6V , Default baud rate:9600,Default pin:1234
  • Button: Press the button, the module enter the AT mode. AT commands are executed only in AT mode.
  • 6 PIN Dupont Cable : with this Dupont Cable, you can easily connect this HC-05 Bluetooth module.
  • Customer Support: DSD TECH provides permanent technical support and 1 year product replacement service for this Bluetooth 2.0 Serial Wireless Module.All questions will be answered within 1 working day.

Full Specifications

BrandDSD TECH
ButtonPress the button, the module enter the AT mode. AT commands are executed only in AT mode.
ConnectivityBluetooth
CompatibilitySwitch, Android
Connection TypeWireless
6 PIN Dupont Cablewith this Dupont Cable, you can easily connect this HC-05 Bluetooth module.
Master and Slave 2-IN-1 HC 05 ModuleWorking Voltage 3.6V to 6V , Default baud rate:9600,Default pin:1234

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DSD TECH HC-05 Classic Bluetooth 2.0 Serial Wireless Module for UNO R3 Nano (Basic Version) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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DSD TECH HC-05 Classic Bluetooth 2.0 Serial Wireless Module for UNO R3 Nano (Basic Version)
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