JDY-40 2.4GHz Wireless Serial Port Transceiver Module

JDY-40 2.4GHz Wireless Serial Port Transceiver Module is a high-performance, ultra-low power wireless communication solution designed for seamless transparent data transmission between embedded devices. Operating on the universal 2.4GHz ISM band, this module utilizes advanced frequency hopping technology to ensure stable connections even in environments with significant electronic interference. Furthermore, the JDY-40 supports a wide range of functions including serial port transparent transmission, IO control, and remote triggering. Consequently, it empowers developers to replace traditional wired serial connections with a reliable wireless link over distances of up to 120 meters. Therefore, you should choose this module for projects requiring a cost-effective, easy-to-configure, and energy-efficient wireless interface.

Key Features:

• High-Speed Transmission: Supports a maximum air data rate suitable for real-time sensor monitoring and control applications.
• Ultra-Low Power Design: Features multiple sleep modes that consume micro-ampere level current, making it perfect for battery-powered IoT devices.
• Long Communication Range: Achieves a stable line-of-sight transmission distance of approximately 120 meters under optimal conditions.
• Easy Configuration: Users can easily adjust parameters such as baud rate, channel, and device ID using standard AT commands via the serial interface.
• Versatile Working Modes: Offers eight distinct working modes, including transparent transmission, remote IO switching, and PWM output control.

Technical Specifications:

• Operating Frequency: 2.4 GHz ISM Band (2400 MHz to 2483.5 MHz)
• Operating Voltage: 2.2 V to 3.6 V DC
• Transmit Power: Maximum 12 dBm
• Receiver Sensitivity: −97 dBm
• Serial Port Baud Rate: 1200 bps to 115200 bps (Configurable)
• Operating Current: ≈ 40 mA (Transmitting), ≈ 24 mA (Receiving), < 5 µA (Sleep)
• Operating Temperature: −40°C to +85°C

Mechanical Specifications:

• Antenna Type: On-board PCB Trace Antenna
• Package Type: SMD / DIP compatible (Stamp hole interface)
• Mounting: Supports 2.54 mm pitch header pins or direct surface mounting.
• Durability: Built with high-quality components to withstand industrial vibration standards.

Dimensions:

• Module Length: ≈ 23.0 mm
• Module Width: ≈ 14.0 mm
• Module Thickness: ≈ 2.0 mm (PCB thickness)
• Pin Pitch: 2.54 mm (Standard header compatibility)

Pinout and Wiring:

• VCC: Connect to a stable 3.3 V power source.
• GND: Connect to the common system ground.
• TXD: Connect to the RXD pin of your host microcontroller or PC serial adapter.
• RXD: Connect to the TXD pin of your host microcontroller or PC serial adapter.
• SET: Pull this pin low to enter AT command configuration mode; leave it floating or pull high for transparent communication.
• CS: Chip Select/Sleep control pin. Drive low to wake up the module and high to enter low-power sleep mode.

Datasheet Reference:

• Download JDY-40 Wireless Transceiver Datasheet

Commonly Used in:

• Wireless Sensor Networks: Transmitting data from remote temperature, humidity, or pressure sensors to a central hub.
• Remote Control Systems: Implementing wireless control for toys, home appliances, and industrial machinery.
• UART Cable Replacement: Eliminating physical wires between two microcontrollers or a microcontroller and a PC.

Applications:

• Smart Home Automation: Managing wireless lighting, security locks, and curtain controllers.
• Smart Agriculture: Monitoring soil moisture and environmental conditions across large greenhouse areas.
• Industrial Telemetry: Reading parameters from moving parts or rotating machinery without slip rings.
• Wireless POS Systems: Handling data transfer between handheld terminals and base stations.

Equivalent Models:

• nRF24L01+: A very popular 2.4GHz module, however, it requires an SPI interface instead of simple UART serial.
• HC-12: Operates at 433MHz with a longer range, though it may have lower data throughput compared to the JDY-40.
• JDY-41: A newer iteration within the same family providing similar serial transparent transmission features.

Package Includes:

• 1 x JDY-40 2.4GHz Wireless Serial Port Transceiver Module