{"product_id":"jdy-40-2-4g-wireless-serial-ttl-transceiver-module-diy","title":"JDY-40 2.4G Wireless TTL Serial Transceiver Module – DIY","description":"\n\u003ch2\u003eJDY-40 2.4G Wireless Serial Port Transceiver \u0026amp; Remote Communication Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eJDY-40 2.4G Wireless Serial Transceiver Module\u003c\/strong\u003e 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.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2.4GHz Frequency Band\u003c\/strong\u003e — Stable, widely-used ISM band for interference-resilient wireless links\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUp to 120-Meter Range\u003c\/strong\u003e — Long enough for most indoor automation, robotics, and remote-control applications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum 12 dBm Transmission Power\u003c\/strong\u003e — Strong signal output for reliable data delivery\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e-97 dBm Receiver Sensitivity\u003c\/strong\u003e — Picks up even weak signals for consistent two-way communication\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard TTL Serial Interface\u003c\/strong\u003e — Drop-in compatible with Arduino, Raspberry Pi, STM32, and virtually any microcontroller\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-Low Sleep Current: 5 µA\u003c\/strong\u003e — Ideal for battery-powered and energy-sensitive designs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Operating Temperature: -40°C to 80°C\u003c\/strong\u003e — Suited for both indoor and demanding outdoor environments\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Size: 23.2 × 13.8 mm\u003c\/strong\u003e — Fits easily into tight enclosures and PCB layouts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eWorking Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e2.4 GHz\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eTransmission Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003eMax 12 dBm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eReceiver Sensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e-97 dBm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eTransmission Distance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003eUp to 120 meters\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eWorking Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e2.2V – 3.6V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eTX Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e40 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eRX Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e24 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eSleep Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e5 µA\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eCommunication Interface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003eStandard TTL Serial Port\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e-40°C to 80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003ePlastic + Metal\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e23.2 × 13.8 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e\u003cstrong\u003ePackage Contents\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px; border:1px solid #ddd;\"\u003e1 × JDY-40 Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eApplication Scenarios\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2.4G panel switches and remote controllers\u003c\/li\u003e\n  \u003cli\u003e2.4G transparent data transmission\u003c\/li\u003e\n  \u003cli\u003eOne-to-many mobile phone control systems\u003c\/li\u003e\n  \u003cli\u003eIO switching control projects\u003c\/li\u003e\n  \u003cli\u003e2.4G-enabled RC toys and gadgets\u003c\/li\u003e\n  \u003cli\u003eSmart home and intelligent automation systems\u003c\/li\u003e\n  \u003cli\u003eIndustrial automation and sensor networks\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.energystar.gov\/products\" target=\"_blank\" rel=\"noopener\"\u003eENERGY STAR product efficiency guidance\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Is the JDY-40 2.4G wireless module compatible with Arduino and Raspberry Pi?\u003c\/h4\u003e\n\u003cp\u003eA: 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.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the effective wireless transmission range of the JDY-40 module?\u003c\/h4\u003e\n\u003cp\u003eA: 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.\u003c\/p\u003e\n\u003ch4\u003eQ: Can the JDY-40 module be used in battery-powered DIY projects?\u003c\/h4\u003e\n\u003cp\u003eA: 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.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo 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.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is the JDY-40 2.4G wireless module compatible with Arduino and Raspberry Pi?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"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. 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