There are many very similar Bluetooth modules available and sometimes it can be difficult finding out, not only which one you have, but also how yo use them. Here I look at some of the modules I have and try to show the basic settings.
Getting Started
Connecting To A Computer
Android Apps
Bluetooth 2.0/2.1 EDR Modules
HC-06 (ZG-B23090W) Bluetooth 2.0 EDR modules
HC-05 (ZG-B23090W) Bluetooth 2.0 EDR modules
SPP-C HC-06 / BT06 HC-06
HC-06 zs-040 hc01.com v2.0
HC-05 zs-040 hc01.com V2.1
HC-05 FC-114 and HC-06 FC-114
HC-05 and HC-06 zs-040 Bluetooth modules
Bluetooth 4 / BLE Modules
HM-10
HM-11
BT05-A mini BLE Bluetooth V4.0 iBeacon
AT-09 Bluetooth V4.0 CC2541