HC-05 Wireless Bluetooth Module Core PCB without Base Plate

The HC-05 Wireless Bluetooth Module Core PCB is a compact and reliable Bluetooth SPP module designed for transparent serial communication. It operates on Bluetooth v2.0+EDR and works in the 2.4GHz ISM band, making it ideal for wireless control, data logging, and embedded projects. With an onboard antenna and UART interface, it offers stable connectivity and easy integration with microcontrollers.

Features:

1. Bluetooth Specification v2.0+EDR with SPP support for wireless serial communication
   
2. UART interface with programmable baud rate for flexible integration
   
3. Built-in PCB antenna ensures stable connectivity and strong signal performance
   
4. Operates in the 2.4GHz ISM band with GFSK modulation
   
5. Supports automatic reconnection and pairing with previously connected devices
   
6. Low operating current ideal for microcontroller and embedded applications

Specifications:

• Bluetooth Protocol: Bluetooth v2.0 + EDR
  
• Frequency: 2.4GHz ISM Band
  
• Modulation: GFSK
  
• Transmission Power: ≤4 dBm (Class 2)
  
• Receiver Sensitivity (at 0.1% BER): ≤–84 dBm 
  
• Communication Speed Asynchronous: Max 2.1 Mbps / 160 kbps
  
• Communication Speed Synchronous: 1 Mbps / 1 Mbps
  
• Working Current: ~30 mA during matching, ~8 mA during communication
  
• Default Baud Rate: 9600 (configurable)
  
• Dimensions: 12.7 × 27 mm

Package Includes:

1 × HC-05 Wireless Bluetooth Module Core PCB without Base Plate