JDY-31 SPP-C Bluetooth Serial Pass-Through Module Wireless UART Communication for Arduino

KSh800.00

● In stock (25 available)

SKU	AT-0101
Category	Wireless Devices
Availability	In stock
Shipping	Countrywide delivery · Free on orders over KSh10,000.00

Description

The JDY-31 SPP-C Bluetooth Serial Pass-Through Module is a compact wireless communication module designed to provide transparent UART serial communication between microcontrollers and Bluetooth-enabled devices. Based on Bluetooth 3.0 SPP (Serial Port Profile), the module allows Arduino, ESP32, STM32, Raspberry Pi, and other microcontrollers to communicate wirelessly with Android phones, Windows PCs, and other Bluetooth devices. The JDY-31 works in transparent serial pass-through mode, meaning any data sent to the UART interface is transmitted wirelessly over Bluetooth without modification. This makes it ideal for wireless control, sensor data transmission, remote monitoring, robotics, smart

Key Features

Bluetooth 3.0 SPP serial pass-through module
Transparent UART wireless communication
Some breakout boards support 5V VCC input
Maximum wireless transmission distance: up to 30m
Built-in PCB antenna
Bluetooth pairing PIN configurable via AT commands
Supports Android, Windows, and Linux Bluetooth communication
Slave-only operation mode
Suitable for Arduino, ESP32, robotics, wireless sensor monitoring, home automation, and serial debugging projects
AT+VERSION – Check firmware version
AT+NAMEYourName – Change Bluetooth device name
AT+PIN1234 – Set pairing password

Specifications

Communication interface	UART / TTL serial
Operating voltage	1.8V–3.6V DC (3.3V recommended)
Logic level on RX/TX pins	3.3V
Default baud rate	9600 bps
Supported baud rates	9600 to 128000 bps
Maximum serial throughput	up to 16KB/s
Default Bluetooth name	JDY-31-SPP
Default pairing password	1234
Low power consumption	approximately 4.7mA idle, 7.3mA connected
Compact PCB size	approximately 39 × 17 mm