JDY‑23A Dual‑Mode Bluetooth Module BLE5.0 SPP3.0 Serial Port Transparent Transmission Wireless Transceiver Module For Arduino DIY IoT Project

JDY‑23A Dual‑Mode Bluetooth Transceiver Module

📌 Product Overview

JDY‑23A is a dual‑mode Bluetooth slave transparent transmission module based on BK3432 chip, supporting SPP3.0 classic Bluetooth and BLE5.0 low‑energy Bluetooth. It adopts built‑in PCB antenna, works on 2.4GHz frequency band, realizes UART serial‑port transparent data transmission. Compatible with Android, iOS and WeChat mini‑programs. It supports AT command parameter configuration, ultra‑low deep‑sleep current, stable long‑distance communication up to 30 meters in open area, widely used for smart home, POS terminal, thermal printer, shared equipment and various MCU serial‑port Bluetooth transformation projects.

📋 Product Specifications

Item	Parameter
Model	JDY‑23A
Chip	BK3432
Bluetooth Version	SPP3.0 + BLE5.0
Working Frequency Band	2.4GHz
Communication Interface	UART
Operating Voltage	1.8V‑3.6V, recommended 3.3V
Working Temperature	-40℃ ~ 80℃
Antenna	Built‑in PCB antenna
Transmission Distance	30m (open‑area test for slave device)
Module Dimension	20 * 15 * 1.8 mm
Transmit Power	Max 4dB
Receive Sensitivity	-96dBm
Operating Current	6.5mA
Deep Sleep Current	＜10μA
SPP Throughput	Max 60K bytes/s, actual sending rate 16K byte/s
BLE Throughput	4K bytes/s
SMT Soldering Temperature	＜260℃

✨ Core Features

✅ Dual‑mode design: SPP3.0 classic Bluetooth + BLE5.0 Bluetooth Low Energy ✅ Built‑in PCB antenna, open‑area communication distance up to 30 meters ✅ Wide voltage input 1.8‑3.6V, best working at 3.3V ✅ Ultra‑low power consumption, deep sleep current below 10μA ✅ Support AT commands to modify module parameters ✅ Compatible with Android, iOS mobile phones and WeChat mini‑program development ✅ UART serial transparent transmission, easy to connect with single‑chip microcomputer ✅ Can work as slave device, match JDY‑34 master module for master‑slave interconnection ✅ Small size, suitable for embedded SMT welding

🔧 Working Description

1. JDY‑23A works as Bluetooth slave module by default, cooperate with JDY‑34 master module to realize master‑slave transparent transmission.
2. Send AT INQ command on JDY‑34 to search surrounding slave devices.
3. After discovering JDY‑23A‑SPP slave, execute AT CONAB40011882211 to complete connection.
4. After connection succeeds, two modules realize serial‑port transparent transmission for data interaction.

🛠 Application Scenarios

Bluetooth POS machine, thermal receipt printer, smart home control system, shared power bank, shared digital scale, automobile test equipment, various MCU serial‑port Bluetooth upgrade, IoT wireless data collection projects.

⚠ Important Usage Notice

Kind reminder: If there are version differences or images have not been updated, please refer to the actual product.

1. The module is slave only, need JDY‑34 master module for master‑slave pairing.
2. Recommended power supply voltage is 3.3V, do not exceed 3.6V to avoid chip damage.
3. 30‑meter distance is tested under open‑area environment; actual distance will decrease with obstacles.
4. BLE high baud rate over 38400 will bring transmission delay.
5. SMT soldering temperature shall not exceed 260℃.