HM-10 BLE 4.0 Bluetooth UART Wireless Module | 3.3V–5V

The HM-10 BLE 4.0 Bluetooth Low Energy UART Transparent Wireless Module is a compact, energy-efficient solution for adding wireless connectivity to your microcontroller or Arduino-based projects. With seamless UART serial communication, this module enables transparent data transmission between devices — no complex programming required.

Whether you're building a DIY IoT device, a wireless sensor node, or a custom Arduino project, the HM-10 delivers reliable BLE 4.0 performance in a tiny SMD form factor measuring just 46 × 17 × 5 mm and weighing only 3.2g.

Key Features

• Bluetooth Low Energy (BLE) 4.0 — Ultra-low power wireless communication
• UART Transparent Transmission — Plug-and-play serial wireless bridge
• Wide Voltage Support: 3.3V – 5V logic levels, compatible with Arduino, Raspberry Pi & more
• Bi-Directional Logic Level Shifting — Works seamlessly with both 3.3V and 5V systems
• Compact SMD Package: 46 × 17 × 5 mm | 3.2g
• Wide Operating Temperature: -40°C to +85°C
• Available with or without pre-soldered pins — Ready for breadboard or PCB use
• Customizable configurations available

Specifications

• Bluetooth Version: BLE 4.0
• Interface: UART
• Supply Voltage: 3.3V – 5V
• Operating Temperature: -40°C to +85°C
• Package Type: SMD
• Dimensions: 46 × 17 × 5 mm
• Weight: 3.2g
• Application: Microcontrollers, Arduino, IoT projects, wireless serial communication

Available Options

• 1PC – HM-10 Chip (bare module)
• 1PC – HM-10 with Pin Header
• 5PCS – HM-10 Chip
• 5PCS – HM-10 with Pin Header
• 10PCS – HM-10 Chip
• 10PCS – HM-10 with Pin Header

Perfect For

• Arduino & Raspberry Pi wireless projects
• IoT sensor nodes and home automation
• Wireless serial data logging
• Bluetooth-enabled robotics and wearables
• Makers, hobbyists, and electronics engineers

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Frequently Asked Questions

Q: What is the HM-10 BLE 4.0 Bluetooth module used for?

A: The HM-10 is a Bluetooth Low Energy (BLE) 4.0 UART module commonly used to add wireless serial communication to microcontrollers like Arduino, enabling transparent data transfer between devices over BLE without complex protocols.

Q: Is the HM-10 module compatible with Arduino and 5V systems?

A: Yes! The HM-10 supports both 3.3V and 5V logic levels, making it fully compatible with Arduino, Raspberry Pi, and other popular development boards. The bi-directional logic level shifting ensures reliable communication across different voltage systems.

Q: What is the difference between the HM-10 chip version and the pin header version?

A: The bare chip version is ideal for direct PCB soldering, while the pin header version comes with pre-soldered pins for easy use on a breadboard or in prototyping setups — great for quick testing and development.

Q: What operating temperature range does the HM-10 support?

A: The HM-10 module operates reliably across a wide temperature range of -40°C to +85°C, making it suitable for both indoor and outdoor electronics applications.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.