Bluetooth 5.3 Power Amplifier Board 5W+5W 3.7V 5V Miciro USB True Wireless Stereo Module for Car Home Speaker Subwoofer DIY

This includes 2pcs moduleThis product is a 5.3 BT pair box function (two modules); the voltage is 5V / current is 2a, the power supply is proceed by secondary development of peripheral hardware, the maximum power can be configured to 5W, and theBT device name is ymx-868btPower supply: DC voltage (3.7-5v), current should be more than 1.5a-2a;USB is the charging input port; 5V in can be charged from here; the red light is on when charging, but the red light is not on when fully charged).Please choose the lithium battery with protection board; please choose the manufacturer for the charger, Low quality not only can't keep up with the current, but also can't keep constant current, which is easy to damage the battery and board. Pay attention!!If the function is used, two BT modules must be used; when the is connected to one board, it is mono; when the is disconnected, it is stereoOperation method: : when the BT module is powered on, there will be a "beep" sound; at this time, the automatic pairing connection (after the connection is succeful, there will be a "beep" sound, at the same time, one board will f regularly / the other board LED will be on for a long time. , two A BT modules must be paired and connected. This function can be operated only when it is turned on. After scanning and pairing, it will be connected automaticallyAbout the main frame machine: two A BT modules are used at the same time. If the main frame machine (the blue light fes regularly after pairing connection is the main frame machine, and the blue light is on for a long time is the auxiliary frame machine) is disconnected, the two A BT modules will be disconnected at the same time. After connecting with the mobile phone for one time, it is the host by default.BT connection: the mobile phone turns on the BT detectability of the mobile phone from the setting menu, so that the mobile phone can be detected by the device, and then goes to the BT menu - search device or paired device. After searching the "touch pairing" of ymx-868bt, you can also hear the "prompt tone" to complete the pairing;Note: if it is not a smart phone (Android system), you need to enter the paword - 0000; the BT device name of the product is YMX-868btSelection requirements:Power requirements: DC voltage 3.7v-5v, voltage not higher than 5V; current 1.5a-2a; (special reminder: if using 3.7V lithium battery, please ensure that the lithium battery and discharge can reach 1.5A, some lithium batteries have voltage, but the current is unstable or can not meet the requirements, please use with caution; otherwise, it will always restart or the sound quality is not good, broken / distorted and other ad phenomena)Horn requirements:Horn: select 4 Ω / 5W full frequency horn (special reminder: if using 3.7V lithium battery, please ensure that the lithium battery and discharge can reach 1.5A, some lithium batteries have voltage but the current is unstable or can not meet the requirements, please use with caution; lithium battery with protection board; horn with 4 Ω / 3W)Special attention:1) Bat + is connected to the positive pole dc3.7v to 5V +, GNT - is connected to the negative pole;2) The working voltage of lithium battery is 3.7V, or the DC of regulated power supply is 4.5-5v, and the current is 600-700ma when one horn is connected; about 1.5-2a when two are connected. The lithium powered horn is equipped with 4 Ω 3W + 3W, the regulated power 5V horn is equipped with 4 Ω 5W + 5W. If the current is not enough, there will be some bad phenomena, such as skipping or BT instability, main board restart all the time or poor sound quality / broken sound / distortion (if there is such a problem, please check your power supply); the voltage should not be higher than 5V, otherwise the main chip, power amplifier IC and related components will be damaged, please pay attention3) Horn wiring: white 2p seat SP - / SP + from bottom to top, l-o - / l-o + connected to horn 1; white 2p seat SP - / SP + from bottom to top, R-O - / R-O + connected to horn 2