{"product_id":"1-10-pcs-diy-bt-audio-receiver-board-dc-3-5v-5v-5w-mono-amplifier-decoder-board-mp3-player-tws-3-5mm-aux-speaker-stereo-module","title":"1-10 PCS DIY BT Audio Receiver Board DC 3.5V-5V 5W Mono Amplifier Decoder Board MP3 Player TWS 3.5mm AUX Speaker Stereo Module","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNONE\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eChoice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eCondition\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNew\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003ePackage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eTQFP\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eQuantity\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e1\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eModule\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eis_customized\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='color:rgb(254, 146, 0);font-size:20px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003e1. Efficient power amplifier: capable of providing 5W output power, suitable for driving small speakers or portable audio devices.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003e2. Easy to use: Supports 3.5mm audio input, supports TWS pairing, enhances flexibility in use.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003e3. Low power design: Adopting a low-power circuit design, it can maintain low energy consumption even after long-term operation.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003e4. Compact size: The decoding board is designed to be compact and easy to integrate into various audio systems or devices, saving space.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003e5. Stability and compatibility: After rigorous testing, it ensures stable operation under various audio signal inputs.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='color:rgb(254, 146, 0);font-size:20px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eProduct Description:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eAfter receiving the Bluetooth board, solder the speaker and 3.7V lithium battery according to the wiring diagram below, and then check that the battery is not reversed before starting the test. Turn on the switch and the blue indicator light should be on. If it is not on, quickly shut down and check if the battery is installed correctly. When the indicator light is on and there is a beeping sound, you can turn on your phone's Bluetooth and refresh the Bluetooth name. Find \"DAU Audio\" to connect and play your phone's music.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eRegarding TWS pairing, if you have purchased two DAU Audio Bluetooth modules, stereo pairing is possible. You need to first turn off your phone's Bluetooth, then turn on both boards at the same time, wait for a few seconds to hear a prompt sound, and then one module's blue indicator light will remain on while the other module's indicator light will continue to flash, indicating successful TWS pairing. At this point, turn on your phone and connect to Bluetooth, and you will have a stereo wireless speaker. It is recommended to use a lithium battery with a capacity of 500mAh to 2000mAh and a capacity of 3.7V. The charger should be 5V 1A to 2A and charged using a USB 2.0 to Type-C cable.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='color:rgb(254, 146, 0);font-size:20px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eProduct Parameters:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eWorking voltage: DC3.5V-5V\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eSpeaker: 2-4 Ω (3W-10W), can be connected to one 2 Ω speaker or two 4 Ω speakers at the same time\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eCharger: It is recommended to use 5V\/1A\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eCharging interface: Type-c\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eEarphone jack: 3.5mm\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eBattery: 3.7V polymer lithium battery or 18650 lithium battery (customer's own battery required)\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003eSize: 28.5mm * 17.3mm\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='color:rgb(254, 146, 0);font-size:20px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eProduct List:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003e1X decoding board module\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='color:rgb(254, 146, 0);font-size:20px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003e*The battery and speaker interfaces of this Bluetooth module are both solder pads, which need to be soldered during use. Please prepare your own soldering tools. Welding damage caused by personal reasons does not support returns and refunds.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='color:rgb(254, 146, 0);font-size:20px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eThe following situations cannot be used normally:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003e1. Type-C direct power supply cannot be used. The Type-C charging interface has power limitations and can only be used when charging the battery. If you want to use DC power supply, it needs to be welded to the battery interface.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003e2. It is not possible to directly connect headphones to the 3.5mm headphone jack. This interface is an audio wired input interface.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003e3.1.5V batteries and low-quality lithium batteries cannot be used. The battery requires a 3.7V lithium battery with a protection board current of 4A (ampere) or above, otherwise it will not start or restart at high volume.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style='font-size:20px;font-family:\"times new roman\", times, serif'\u003e4. After welding the horn wire and battery wire, do not pull them hard, otherwise the solder pad will fall off and cannot be used.\u003c\/span\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sc6ac8fdecb8940a0a4e7783d63e3c541Q.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sfa3e0759a5844725a3df4926a3526aces.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S40135a021e6b464d84a09b23ab53e9890.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sd3946a6ec4a9410a9f8a237326e6bf18V.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Se96ffca8c41d4eeca40a369c203559d12.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S68a8867fd4be4d9da172e24b18e991d6K.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S5d75c2688cb949aa860894a0b2f41822i.jpg\" slate-data-type=\"image\"\u003e\u003cimg 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