HM-10 Bluetooth Module
• Fully encapsulated, easy-to-use BLE module.
• Configurable as Master or Slave.
• AT commands allow modifying baud rate, device name, connection interval, etc.
• Coverage up to 60 meters (open field).
• Integrated PCB antenna for compact design.
• UART (TTL) communication.
• Supports transparent mode (bridge mode) — works without additional MCU logic.
• Default 20 ms connection interval for fast reconnection.
• Adjustable connection interval and power consumption via AT commands.
• Supports mobile App connectivity and IO expansion.
• Includes 2× ADC (14-bit) inputs and 4× PWM outputs (120 Hz).
• Supports RSSI reading and automatic RSSI notification (useful for anti-lost applications).
• Status/Power indicator LED.
• Supports password protection, modification, and reset.
• Very low-power standby operation.
The HM-10 BLE V4.0 TTL module is a Bluetooth Low Energy (BLE) device based on the TI CC2541 chip. It enables wireless serial communication for embedded systems, IoT devices, microcontrollers, and consumer products.
- Uses Bluetooth 4.0 BLE, optimized for extremely low power.
- Communicates over UART (3.3V TTL), compatible with Arduino, ESP32, STM32, Raspberry Pi, PIC, AVR, etc.
- Offers up to 50–60 meters’ communication range (open area).
- Configurable via extensive AT command set for:
- Device name
- Baud rate
- Transmission power
- MAC address
- PIN code
- Advertising interval
- Connection interval
- Master/Slave mode
- Operates from 3.3V–6V (depending on breakout board version).
- Integrated PCB antenna ensures stable communication with small footprint.
- Ideal for projects requiring compact, reliable BLE connectivity.
PACKAGE INCLUDES:
-  1 × HM-10 BLE 4.0 CC2541 Module
| Weight | 10 g |
|---|
• IoT devices
• Wireless sensor networks
• Wearable electronics
• BLE beacons
• Smart home automation
• Industrial automation
• Healthcare sensors
• Location tracking
• DIY & educational projects
• Retail beacons and advertisements
• Lightweight BLE mesh-like systems
| Parameter | Value |
| Bluetooth Version | 4.0 BLE |
| Chipset | TI CC2541 |
| Operating Voltage | 5V input (3.3V internal) |
| Frequency | 2.4 GHz ISM band |
| Modulation | GFSK |
| TX Power | ≤ +4 dBm |
| Sensitivity | ≤ -84 dBm @ 0.1% BER |
| Range | up to 60 meters |
| Baud Rate | 9600 (default), configurable |
| Dimensions | 47 × 17 × 8 mm |
| Weight | 4 g |
| Standby Current | Extremely low (< few µA typical) |
| Shipping Weight | 0.005 kg |
| Shipping Dimensions | 4 × 2 × 1 cm |
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