For Mechless and CD Receivers Refer to the Owner's Manual for a complete list of devices The device name is “DUAL BT”. The Bluetooth passcode “1234”.Find the user manual and the help you need for the products you own at ManualsOnline. Dual Electronics Corporation Car Stereo System XD235M CD RECEIVER. Dual Electronics products for Car, Marine, and Home offer entertainment, connectivity, and safety both at home and on the go. Sound Travels.