[Product Parameters]
Product Name: Bluetooth Decoding Board
Product Model: XY-WRBT
Working voltage: 3.7~24VDC
Bluetooth version: 5.0
Transmission distance: 15 meters (visible without obstruction)
Signal to noise ratio: ≥ 90dB
Distortion: ≤ -70dB
Number of channels: Dual channel (stereo)
Audio interface: 3.5mm audio interface
Module protection mechanism: reverse power protection
[Interface Description]
1. Power supply can be provided by using Micro USB mobile phone charger, 3.7-4.2V lithium battery, 3.7-24V DC power supply, or any one of the three.
2. Short circuit the "on/off contact" for 2 seconds to set the decoding board on/off. For battery powered situations, shutting down when not in use is more energy-efficient and convenient for modification.
[Operation Instructions]
After connecting the power, the blue indicator light flashes rapidly and enters Bluetooth mode; After broadcasting the "prompt sound", enter pairing mode and wait for pairing;
Search for "XY-WRBT" (amplifier board device name) on your phone's Bluetooth, click on "XY-WRBT" to connect. After successful connection, play a "prompt sound" and the indicator
light will stay on to play your phone's music. When playing music, the indicator light will flash slowly; After disconnecting Bluetooth, the power amplifier board prepares for the next
pairing and plays a "prompt sound" before entering pairing mode and waiting for pairing.
Precautions for using 3.7V lithium battery power supply:
1.When using battery power, if the battery voltage drops below 3.3V, the decoding board will automatically shut down and restart Short circuit
the on/off contacts for 2 seconds after charging or fully charging to turn on the device.
2.When using battery power, if the battery voltage is too low, there may be a "sizzling" noiseSound, in this case, the battery needs to be charged.
3. As there is no lithium battery charging protection circuit designed on the decoding board, it is recommended to use the built-in protection circuit
Lithium battery for protective plate.
4.If your rechargeable battery supports MicroUSB direct charging, you can use Micro USB directly charges the battery.
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