Bluetooth module 5.3 Audio transmitter module Stereo GFSK transceiver Earphone board Wireless speaker KCX_ BT_ EMITTER 5

Product Introduction
KCX_ BT_ The EMITER module is a wireless Bluetooth audio transceiver module that integrates Bluetooth stereo audio transmission and reception. It adopts the Bluetooth 5.3 protocol version and supports automatic reconnection of Bluetooth devices that were automatically connected last time. It also supports serial port AT commands to configure compatible Bluetooth device name connections, obtain search results, modify Bluetooth names, control connections and disconnects, and other commands. This module configures the module to work in Bluetooth audio transmission mode or Bluetooth audio reception mode by setting short-circuit solder joints, supports indicator light status display, and connects status level output. Widely used in situations that require Bluetooth audio reception, Bluetooth audio transmission, wireless audio transmission, DIY modification, and so on.
When configured in Bluetooth audio transmission mode: it can wirelessly transmit stereo audio signals through Bluetooth with modules configured in reception mode, or connect to some Bluetooth headphones and Bluetooth speakers to wirelessly transmit audio signals to these Bluetooth receiving devices.
When configured for Bluetooth audio reception mode: can be connected to smartphones or tablets to play Bluetooth music.
Declaration on product compatibility: Due to the numerous solutions for Bluetooth earphones and speaker chips available on the market, there are differences in the underlying software of the chips. When configured in transmission mode, this module only guarantees perfect compatibility with our Bluetooth audio receiver and Bluetooth module, and does not guarantee compatibility with Bluetooth receiving devices from other manufacturers on the market. It cannot connect to car navigation all-in-one machines or devices that require pairing password verification, If you encounter incompatibility when connecting to other manufacturers’ Bluetooth receivers (such as strange issues such as not being able to connect, silent connection, etc.), we also cannot solve them. Friends who mind, please buy with caution
Suggest using two modules together, one set as the transmitter and one set as the receiver, to wirelessly transmit audio signals between the two modules.
description
Product model: KCX_ EMITER Bluetooth Name: Bluetooth Audio Boundary Dimensions: 23.5 * 15.5mm
Working voltage: 3.5-5V
Working current: 35mA
Launch distance: ≤ 20 meters
RF output power:+5dBm RF frequency range: 2402-2480MHz
Audio dynamic range: 80dB
Audio Total harmonic distortion: -70dB
Audio frequency response: 20Hz-20KHz
Audio signal-to-noise ratio: 95dB
Audio input and output signal amplitude: ≤ 2Vpp Number of channels: 2 channels (stereo)
Transmission delay: 250-300mS
Explanation of external 2.4G antenna
The module integrates an IPX 1 with RF output interface for external 2.4G external antennas. When the module is applied inside a metal shell product, an external antenna is required. When using an external antenna, it is necessary to disconnect the PCB board antenna and plug in the IPX RF cable (the external 2.4G antenna needs to be provided by oneself, and the module does not come with an external antenna) as shown in the following figure.