JDY-40 2.4G Wireless TTL Serial Transceiver Module – DIY
JDY-40 2.4G Wireless TTL Serial Transceiver Module – DIY
JDY-40 2.4G Wireless Serial Port Transceiver & Remote Communication Module
The JDY-40 2.4G Wireless Serial Transceiver Module is a compact, easy-to-integrate communication board built on 2.4GHz radio technology. With a standard TTL serial interface, it lets any developer, hobbyist, or engineer add reliable wireless communication to their project without specialized RF knowledge — if you know serial ports, you're ready to go. Made in Mainland China.
Key Features
- 2.4GHz Frequency Band — Stable, widely-used ISM band for interference-resilient wireless links
- Up to 120-Meter Range — Long enough for most indoor automation, robotics, and remote-control applications
- Maximum 12 dBm Transmission Power — Strong signal output for reliable data delivery
- -97 dBm Receiver Sensitivity — Picks up even weak signals for consistent two-way communication
- Standard TTL Serial Interface — Drop-in compatible with Arduino, Raspberry Pi, STM32, and virtually any microcontroller
- Ultra-Low Sleep Current: 5 µA — Ideal for battery-powered and energy-sensitive designs
- Wide Operating Temperature: -40°C to 80°C — Suited for both indoor and demanding outdoor environments
- Compact Size: 23.2 × 13.8 mm — Fits easily into tight enclosures and PCB layouts
Technical Specifications
| Working Frequency | 2.4 GHz |
| Transmission Power | Max 12 dBm |
| Receiver Sensitivity | -97 dBm |
| Transmission Distance | Up to 120 meters |
| Working Voltage | 2.2V – 3.6V |
| TX Current | 40 mA |
| RX Current | 24 mA |
| Sleep Current | 5 µA |
| Communication Interface | Standard TTL Serial Port |
| Operating Temperature | -40°C to 80°C |
| Material | Plastic + Metal |
| Dimensions | 23.2 × 13.8 mm |
| Package Contents | 1 × JDY-40 Module |
Application Scenarios
- 2.4G panel switches and remote controllers
- 2.4G transparent data transmission
- One-to-many mobile phone control systems
- IO switching control projects
- 2.4G-enabled RC toys and gadgets
- Smart home and intelligent automation systems
- Industrial automation and sensor networks
Learn more: ENERGY STAR product efficiency guidance
Frequently Asked Questions
Q: Is the JDY-40 2.4G wireless module compatible with Arduino and Raspberry Pi?
A: Yes! The JDY-40 uses a standard TTL serial interface, making it directly compatible with Arduino, Raspberry Pi, STM32, ESP32, and virtually any microcontroller that supports UART serial communication. No special drivers or RF expertise are required.
Q: What is the effective wireless transmission range of the JDY-40 module?
A: The JDY-40 supports a transmission distance of up to 120 meters in open-air conditions. Range may vary slightly depending on obstacles, interference, and environmental factors in your specific installation.
Q: Can the JDY-40 module be used in battery-powered DIY projects?
A: Absolutely. The JDY-40 features an ultra-low sleep current of just 5 µA and operates on 2.2V–3.6V, making it highly efficient for battery-powered applications such as wireless sensors, remote controls, and IoT devices where power conservation is essential.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.