DS18 BTR2D - Transmitting (TX) mode; How to pair 2 devices and use them simultaneously?

Transmitting (TX) mode
1. When the adapter was paired with the Bluetooth® devices, the
device’s BT paring name will be shown on the screen.
2. Press and hold for 2 seconds to decrease the Volume, and
press and hold for 2 seconds to increase the Volume.
3. Press and hold for 2 seconds to clear BT connection memory
and search for potential Bluetooth® device.
How to pair 2 devices and use them
simultaneously?
(Works in TX mode)
When one Bluetooth® device is connected, short press to
search for the second one, select and connect the second
Bluetooth® device from search results.
6
SIGNAL