Product parameters:

Product name: Bluetooth decoder board
Product model: XY-WRBT
Working voltage: 3.7~24V DC
Bluetooth version: V5.0
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: power reverse connection protection

Interface Description:

1. Power supply can use Micro-USB mobile phone charger, 3.7-4.2V lithium battery, 3.7-24V DC power supply, you can choose one of the three.
2. Short-circuit the "on/off contact" for 2 seconds to set the decoder board to on/off. For battery-powered situations, shutting down when not in use will save power and facilitate modification.

Instructions:

After the power is turned on, the blue indicator light flashes quickly and enters the Bluetooth mode; after the "prompt tone" is broadcast, it enters the pairing mode and waits for pairing; the mobile phone Bluetooth searches for "XY-WRBT" (power amplifier board device name),click "XY-WRBT" After the connection is successfully connected, the "prompt tone" will be played, and the indicator light will be on, and the mobile phone music can be played. The indicator flashes slowly when playing music; after the Bluetooth is disconnected, the amplifier board is ready for the next pairing and enters after the "prompt tone" is played The pairing mode waits for pairing.

Precautions for using 3.7V lithium battery power supply:

1. When using battery power, the decoder board will automatically shut down when the battery voltage is lower than 3.3V, and then short-circuit the on/off contact for 2 seconds to turn it on after re-powered or fully charged.
2. When using a battery to supply power, if the battery voltage is too low, a "sizzling" noise may appear. In this case, the battery needs to be charged.
3. Since there is no lithium battery charging protection circuit on the decoder board, it is recommended to use a lithium battery with a protection board.
4. If your rechargeable battery supports Micro USB direct charging, you can use Micro USB to directly charge the battery.

Package Includes:

1x Bluetooth 5.0 Audio Receiver Module

About Us:

Dear customers,we are professional manufacturer that produce Bluetooth devices like Bluetooth adapters,Bluetooth earphones and Bluetooth speakers.We will test all the products before we send the products out,which make sure that you will receive the perfect products.

Shipment & Payment:
1. We will shipped the parcel in 1-3 days after you made payment.
And the following forms of payment are accepted by Aliexpress: Credit card, TT, Western Union and Qiwi wallet.
2. Instruction:the weight and size we marked in the package details is not the actual weight and size of the goods, if you need to know the actual weight and size, you just need to contact us.
3. Delivery time:
1) Transportation developed countries is about 7-45 days.
2) Remote countries is about 2-8 weeks.
4. If buyer want to use more faster shipping method, like EMS, DHL etc, please communicate with us about the increase shipping.
5. Instruction:The shipping time is depends on the buyer\'s customs clearance time or Force Majeure. If buyer does not receive the goods in a long time, we hope buyer can contact your customs or local post office, in order to get goods soon.

After-sales Service:
We will check the goods quality before shipment. If there are some unexpected problems
happen, we hope to solve the problems with buyer through friendly in the following ways:
1. If it is quality problem, buyer can submit argue within 15days after receiving the goods, buyer must provide photos or video and other evidence to seller for identify.
2. Man-made damaged, buyers take full responsibility.
3. Product quality processing program:
1) The buyer return the goods to us and responsible for return shipping costs; after we receive the goods ,we will send a new product to buyer and pay for the resend shipping cost.
2) If the goods (total price including shipping is less than 10USD) has quality problems, we will resend a new product in buyer next order; if buyer don\'t plan to make a new order in the near term, buyer can pay the resend shipping cost and ask to resend a new product.

Feedback:
1. We depend on our customer satisfaction to succeed. Therefore, your feedback is extremely important to us.
2. If you are satisfied with our items, please leave a positive feedback to us. We will leave a positive feedback to you later.
3. Contact us by email or our trade manager:Miss Liu, before leaving any negative or neutral feedback. We will deal with you to solve any problems as soon as possible.
We work 6 Days a week at 10:00 - 19:00 from Monday - Saturday Beijing Time.
Wish you have a great shopping experience here---VAORLO 3C STORE