HM-12 Bluetooth Module with Base Board HM12 V4.0 EDR BLE

The HM-12 is a compact Bluetooth module supporting both Bluetooth Low Energy (BLE) and Classic Bluetooth (EDR V4.0), mounted on a breakout board for easy integration into your electronics projects.

This module enables wireless communication via the Serial Port Profile (SPP) or BLE protocols, making it ideal for IoT applications, home automation, and remote control systems where serial wire connections are impractical. It operates on a 3.3V power supply and offers a range of up to 100 meters in open spaces.

Specifications

• Specification: Bluetooth V4.0 EDR and BLE (Low Energy)
• Frequency: 2.4 GHz ISM band with GFSK modulation
• Data rate: Up to 50% of serial port baud rate for both SPP and BLE
• Maximum range: 100 meters (open space, BLE mode)
• Supply voltage: +3.3 VDC / 50 mA
• Current consumption: 10-17 mA sleep mode, 13 mA SPP mode, 9.5 mA BLE mode
• Security: Built-in authentication and encryption
• Supported services: L2CAP, SDP, RFCOMM, SPP, ATT, GATT
• Operating temperature: –5 to +65 °C
• Module dimensions: 26.9 mm x 13 mm x 2.2 mm