Bluetooth modules FSC-BT630 and FSC-BT909 from Feasycom have been chosen over other modules on the market because of the best PCB size, quality, functionality and price point.FSC-BT630 has same functionality as FSC-BT909 but twice as small, lower signal strength and only BLE protocol support (no SPP).Please head over and check out the ForceSync Saber App page here from ShtokCustomWorx for wiring diagrams and instructions.Recommended bluetooth module for wireless R.I.C.E. (sound board configuration via bluetooth) use with "ForceSync" smartphone app made by ShtokCustomWorx: ForceSync for iOS can be downloaded here. ForceSync for Android can be downloaded here. There is also another app compatible by Tristan Kam over at https://crystalfocus.net/. Crystal FX for iOS can be downloaded here. Crystal FX for Android can be downloaded here. Supported sound boards: Crystal Focus v7.5-v9.0 Crystal Focus v10 (CFX) Prizm Crystal Shard Pico Crumble Proffieboard Features: Smallest Board Size Name and Passcode Settings Doesn’t work with default Plecterlabs R.I.C.E. programs on PC/laptop! Not for sound transmission!PLEASE NOTE: These boards have been fully tested and approved prior to shipping. It is highly recommended to have a professional saber builder install this board. If you wish to install yourself; it is at your own risk. KR Sabers cannot be held responsible for any damage to the board during installation. If there are any technical issues with the installation of the board please get in touch.Please be sure that before ordering, you are fully aware of the shipping policies outlined here: https://thesaberarmory.com/shipping-policies/