Operation guide:

Master board:

1. Power supply the TSA8804 module. A blue LED flashes slowly.
2. Press the PAIR button twice to enter pairing mode. The blue LED flashes rapidly.
3. Now connect your smartphone to the module via Bluetooth. The module is identified by the name TSA8804.
4. You can now play your music. If you use only one module, the following steps are not necessary. These steps allow the use of several modules in combination.
5. Press the TX button to activate the transmitter mode on the module. A red LED lights up.

Slave board:

1. Power supply another TSA8804 module. A blue LED flashes slowly.
2. Make sure the master module is functioning properly and is in transmitter mode. Press the RX button to activate the receiver mode on the slave module. The slave module will then automatically search for the master module. A green LED lights up.
3. Press the RX button on the slave module twice and the TX button on the master module twice. The master module automatically searches (30s) for the slave module. The master and slave modules are now connected.
4. The slave module can now play sound.
5. If you want to add other slave modules, simply repeat the previous steps on them.
6. To disassociate a slave module, press its TX button.

Activation of the bridge mode :

The TSA8804 is based on the TDA7498E chip. It can therefore be used in stereo or mono BTL. For this, you can use a jumper to close the contacts corresponding to the bridge mode of the module. It is then necessary to connect SPK1+ and SPK2+ together and do the same for SPK1- and SPK2-. It is possible to perform this operation on SPK3 and SPK4 in the same way.