--- product_id: 48698865 title: "DSD TECH HC-05 Classic Bluetooth 2.0 Serial Wireless BT Module for Arduino UNO R3 Nano Pro Mini MEGA" brand: "dsd tech" price: "€ 0.01" currency: EUR in_stock: false url: https://www.desertcart.at/products/48698865-dsd-tech-hc-05-classic-bluetooth-2-0-serial-wireless store_origin: AT region: Austria --- # Bluetooth 2.0 classic wireless 3.6-6V wide voltage range AT command mode for custom config DSD TECH HC-05 Classic Bluetooth 2.0 Serial Wireless BT Module for Arduino UNO R3 Nano Pro Mini MEGA **Brand:** dsd tech **Price:** € 0.01 **Availability:** ❌ Out of Stock ## Summary > 📡 Unlock wireless wizardry with HC-05 — your Arduino’s Bluetooth BFF! ## Quick Answers - **What is this?** DSD TECH HC-05 Classic Bluetooth 2.0 Serial Wireless BT Module for Arduino UNO R3 Nano Pro Mini MEGA by dsd tech - **How much does it cost?** € 0.01 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/48698865-dsd-tech-hc-05-classic-bluetooth-2-0-serial-wireless) ## Best For - dsd tech enthusiasts ## Why This Product - Trusted dsd tech brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Dual Mode Flexibility:** Switch between Master and Slave modes to control or be controlled by other Bluetooth 2.0 devices, expanding your project’s versatility. - • **Trusted Brand Support:** Backed by DSD TECH’s one-year warranty and expert technical assistance, so you’re never coding alone. - • **Customizable Communication:** Enter AT command mode with a simple button press to tweak baud rates and settings, giving you full control over your wireless link. - • **Robust Power Compatibility:** Operates smoothly within a 3.6V to 6V range, ensuring stable performance across various DIY setups. - • **Seamless Arduino Integration:** Plug-and-play 6-pin Dupont cable included for effortless connection to your Arduino UNO, Nano, or MEGA boards. ## Overview The DSD TECH HC-05 is a classic Bluetooth 2.0 serial module designed for Arduino projects, enabling wireless control via Android devices. Featuring dual master/slave modes, a wide operating voltage of 3.6-6V, and easy AT command configuration, it comes with a 6-pin Dupont cable for quick setup. Ideal for makers seeking reliable Bluetooth connectivity with dedicated technical support and a one-year warranty. ## 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 arduino project or other 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 for Aduino, it is not compatible with iphone or ipad If you need to use iphone or ipad to control your arduino 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 mode Way 1: Step 1: Input low level to PIN34->EN PIN. (it can also be floating) Step 2: Supply power to the module. Step 3: Input high level to the EN PIN(PIN34)(you can press the button this do this action,if you buy HC-05 from DSD TECH) Then the module will enter to AT mode. The baud rate is as same as the communication time, default is 9600 Way 2: Step 1: Connect PIN34(EN PIN) to the power supply PIN.or always press the button . Step 2: Supply power to module Then the module will enter to AT module. But at this time, the baudrate is always 38400. In this way, user should change the baud rate at the AT mode, if they forget the communication baud rate. Package List: 1* HC-05 Module with 6PIN for Arduino 1* 6PIN Dupont Cable About WARRANTY: ## Features - HC-05 Wireless BT Module: with this HC 05 Bluetooth module,You can quickly add the Bluetooth feature to your Arduino 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 Dopunt Cable : with this Dupont Cable, you can easily connect this HC-05 Bluetooth module to your Arduino Board - Why choose DSD TECH brand: you not only get high-quality products, you can also get technical support and ONE YEAR WARRANTY. You can ask any questions about this HC05 module, our technical team is waiting for you. ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | DSD TECH | | Product Dimensions | 5.08 x 3.81 x 0.25 cm; 5.67 g | | Item model number | HC-05 | | Manufacturer | DSD TECH | | Colour | Black, Green, Silver | | Processor Type | 80486 | | Processor Speed | 2 MHz | | RAM Size | 2 MB | | Computer Memory Type | EEPROM | | Hard Drive Size | 32 KB | | Hard Drive Interface | USB | | Wireless Type | Bluetooth | | Voltage | 5 Volts | | Operating System | android | | Are Batteries Included | No | | Item Weight | 5.66 g | | Guaranteed software updates until | unknown | ## Images ![DSD TECH HC-05 Classic Bluetooth 2.0 Serial Wireless BT Module for Arduino UNO R3 Nano Pro Mini MEGA - Image 1](https://m.media-amazon.com/images/I/61m3XCVOq+L.jpg) ![DSD TECH HC-05 Classic Bluetooth 2.0 Serial Wireless BT Module for Arduino UNO R3 Nano Pro Mini MEGA - Image 2](https://m.media-amazon.com/images/I/61TQG6ds5mL.jpg) ![DSD TECH HC-05 Classic Bluetooth 2.0 Serial Wireless BT Module for Arduino UNO R3 Nano Pro Mini MEGA - Image 3](https://m.media-amazon.com/images/I/51Z4ozRlSOL.jpg) ![DSD TECH HC-05 Classic Bluetooth 2.0 Serial Wireless BT Module for Arduino UNO R3 Nano Pro Mini MEGA - Image 4](https://m.media-amazon.com/images/I/61Jw7bvvD8L.jpg) ![DSD TECH HC-05 Classic Bluetooth 2.0 Serial Wireless BT Module for Arduino UNO R3 Nano Pro Mini MEGA - Image 5](https://m.media-amazon.com/images/I/71+qsl+VxIL.jpg) ## Questions & Answers **Q: Where can i get an at command list for an hc05 module?** A: You can download product content from http://www.dsdtech-global.com/ **Q: What is the difference between this unit and the one you have for $9.49 without the jumper cables?** A: One contains a DuPont cable and the other does not. **Q: Can i connect this to sensor trackers to send midi via bluetooth smart to an ios device?** A: hc-05 is a bluetooth 2.0 module. it don't support any iOS device. maybe you can try "DSD TECH HM-10 bluetooth module" it is bluetooth 4.0 ble module ,it support bluetooth smart and iOS . ## Frequently Bought Together - DSD TECH HC-05 Classic Bluetooth 2.0 Serial Wireless BT Module for Arduino UNO R3 Nano Pro Mini MEGA (Basic Version) - Elegoo 120pcs Multicolored Dupont Wire 40pin Male to Female, 40pin Male to Male, 40pin Female to Female Breadboard Jumper Wires Ribbon Cables Kit for arduino - ELEGOO UNO R3 Board ATmega328P ATMEGA16U2 with USB Cable Compatible with Arduino IDE Projects RoHS Compliant --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.at/products/48698865-dsd-tech-hc-05-classic-bluetooth-2-0-serial-wireless](https://www.desertcart.at/products/48698865-dsd-tech-hc-05-classic-bluetooth-2-0-serial-wireless) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-04-23*