HC-05 6pin Bluetooth Module with Button High Quality

The HC-05 6pin Bluetooth Module with button gives Arduino, ESP8266, PIC and other microcontroller boards a wireless serial link over classic Bluetooth. Wired to the TX and RX pins, it behaves like a serial cable without the cable, connecting to an Android phone, a PC or a second HC-05. The on-board button puts the module into AT command mode, where you can change its name, PIN, baud rate and master or slave role.

HC-05 6pin Bluetooth Module Specifications

• Bluetooth: version 2.0 + EDR, Serial Port Profile (SPP)
• Role: master or slave, set with AT commands
• Supply voltage: 3.6 V to 6 V on the VCC pin
• Logic level: 3.3 V on TXD and RXD
• Default settings: name HC-05, PIN 1234, 9600 baud in data mode
• AT command mode: 38400 baud, entered by holding the button while powering on
• Range: about 10 m in open space
• Pins: EN, VCC, GND, TXD, RXD, STATE
• Status LED: shows pairing, connected and AT mode states

HC-05 6pin Bluetooth Module Applications

• Phone-controlled robot cars and RC models using Android apps
• Sending sensor data wirelessly to a phone or PC
• Master and slave link between two Arduino boards
• Home automation and relay control
• School projects with phone apps built in MIT App Inventor

What's in the Box

• 1 × HC-05 Bluetooth module, 6 pins, with button

Tip: Cross the serial lines: module TXD to the Arduino RX pin and RXD to TX, with a 1 kΩ / 2 kΩ voltage divider on RXD when the Arduino runs at 5 V. If AT commands get no reply, set the serial monitor to 38400 baud with both NL and CR line endings. Classic Bluetooth works with Android phones and PCs, not with iPhones.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.