As frarugi87 recommended in the comments, you need to change the device's name. Changing the device name will allow you to identify it by a custom name that you come up with. To do this you need to use something called AT Commands. Here is a guide that contains many of the system parameters that you can check and change via AT Commands: http://www.instructables.com/id/Modify-The-HC-05-Bluetooth-Module-Defaults-Using-A/?ALLSTEPS
Here is a brief summary about how to change the device name, quoted from the above Instructable:
First switch the device into command mode
For the HC-05 module to switch to AT command mode, the HC-05 pin 34
(often referred to as the Key pin) needs to pulled HIGH but in a
certain order of events explained below. When the HC-05 enters the AT
command mode, it will communicate at 38400 baud rate. Follow these
steps in the stated order to switch to the HC-05 to AT command mode.
- Wire the HC-05 and Arduino Uno per instructions.
- BEFORE YOU CONNECT THE ARDUINO TO THE USB remove the VCC (power) red wire from the HC-05 so it's not getting any power from the
Arduino. All other wires are still connected.
- Now connect the Arduino Uno to the USB cable extended from your PC.
- Make sure the HC-05 module is NOT PAIRED with any other Bluetooth device.
- Re-connect the Arduino Uno 5V wire to the HC-05's VCC (5V power) pin.
- The HC-05 LED will blink on and off at about 2 second intervals. Now the HC-05 is in AT command mode ready to accept commands to change
configuration and settings.
- To test if everything is wired correctly, open the Serial Monitor from the 8. Arduino IDE and type "AT" and click SEND. You should see
an "OK" If you don't see an "OK" check your wiring.
Next run this program on your Arduino
AUTHOR: Hazim Bitar (techbitar)
DATE: Aug 29, 2013
LICENSE: Public domain (use at your own risk)
CONTACT: techbitar at gmail dot com (techbitar.com)
SoftwareSerial BTSerial(10, 11); // RX | TX
pinMode(9, OUTPUT); // this pin will pull the HC-05 pin 34 (key pin) HIGH to switch module to AT mode
Serial.println("Enter AT commands:");
BTSerial.begin(38400); // HC-05 default speed in AT command more
// Keep reading from HC-05 and send to Arduino Serial Monitor
// Keep reading from Arduino Serial Monitor and send to HC-05
Finally (the quotes aren't part of the command)
To change device name from the default HC-05 to let's say MYBLUE