--- product_id: 588120301 title: "LD2420 Radar Sensor Module 24GHz ISM Human Body Micromotion Millimeter Wave Radar Sensor Module AIOT Smart Home 8M 3.3V 50A" brand: "ec buying" price: "€ 11.96" currency: EUR in_stock: true reviews_count: 8 category: "Ec Buying" url: https://www.desertcart.pt/products/588120301-ld2420-radar-sensor-module-24ghz-ism-human-body-micromotion-millimeter store_origin: PT region: Portugal --- # 50mA low power consumption 8m max sensing distance 24GHz radar frequency LD2420 Radar Sensor Module 24GHz ISM Human Body Micromotion Millimeter Wave Radar Sensor Module AIOT Smart Home 8M 3.3V 50A **Brand:** ec buying **Price:** € 11.96 **Availability:** βœ… In Stock ## Summary > πŸš€ Elevate your smart space with pinpoint radar sensing β€” don’t just detect, anticipate! ## Quick Answers - **What is this?** LD2420 Radar Sensor Module 24GHz ISM Human Body Micromotion Millimeter Wave Radar Sensor Module AIOT Smart Home 8M 3.3V 50A by ec buying - **How much does it cost?** € 11.96 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/588120301-ld2420-radar-sensor-module-24ghz-ism-human-body-micromotion-millimeter) ## Best For - ec buying enthusiasts ## Why This Product - Trusted ec buying brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Compact & Efficient:** Ultra-small 20x20mm module with low 50mA power draw, perfect for sleek, energy-conscious smart devices. - β€’ **Interference Shielding:** Advanced signal processing blocks out noise beyond set zones, ensuring reliable detection in busy indoor spaces. - β€’ **Plug & Play Integration:** Supports GPIO and UART interfaces for effortless setup with popular AIoT platforms like ESPHome and Home Assistant. - β€’ **Customizable Sensing Range:** Easily configure detection distance, sensitivity, and refresh rate to tailor your environment’s responsiveness. - β€’ **Precision Motion Detection:** Detects micro and macro human movements with Β±0.5m accuracy for seamless smart home automation. ## Overview The LD2420 is a cutting-edge 24GHz millimeter wave radar sensor module designed for precise indoor human motion detection up to 8 meters. Featuring advanced AI-driven signal processing, it supports real-time micro-motion sensing with Β±0.5m accuracy. Its compact 20mm form factor, low 50mA power consumption, and flexible GPIO/UART interfaces make it ideal for seamless integration into AIoT smart home systems, delivering customizable sensitivity and interference shielding for reliable performance. ## Description Product description EC Buying also focuses on providing customers with comprehensive services. We have a professional sales team, which can provide customers with timely and accurate product consultation, and after-sales service. We always put customers at the center, and strive to create greater value for customers. EC Buying , are always committed to innovation and breakthroughs in the field of electronic components , providing electronic component products to global customers with a professional , focused , and focused attitude . We have a wide range of product lines, covering various electronic components such as module , development board , resistors , capacitors , diodes , transistors , integrated circuits , etc., meeting the needs of different industries and fields. Equipped with single chip intelligent millimeter wave sensor SoC and intelligent algorithm firmware Ultra small module size: 20mm x 20mm Load default human sensing configuration, plug and play The 24GHz ISM frequency band can be accessed through FCC CE, Non Commission Spectrum Regulation Certification 3.3V power supply, supporting a wide voltage range of 3.0V to 3.6V Average working current 50 mA The detection target is a moving or micro moving human body Real-time reporting of detection results provide visualization tools to support configuration of detection distance intervals, sensitivity settings between partitions, and result reporting time Supports sensing range division and completely shields any interference outside the range Proximity 0.2m induction, no detection area The longest distance for human motion sensing is 8 meters Review: Works with esphome and home assistant - I've used two of these and they work well with home assistant and esphome. The recognized movement at a fair distance, say 30ft. Lots of different options to play with in the settings. Review: Don't trust the description for this LD2420 - First - if you want to know how to hook this up and get started quickly, search for ld2420 on esphome's site. Not only will you get access to the code to see an example, but there's a very nice module page that describes all the CORRECT hookups, in English without any false/misleading information. The problem with this unit is, simply put, that two different versions exist with the same look and feel and depending on what version, the hookup is very different. The original/old version (= v1.5.3) version. This means OT1 is the TX and not OT2 and the baud rate on this unit is only 115200 - not the weird 256000 for the old version. I've found no way to tell which version the unit is by looking at it. Only once you ARE connected can you query the firmware version, and then know how to hook up the wires, and well - you get it. It's a mess. Once hooked up to an old ESP32 using TX2/RX2 for basic uart functionality I finally got the results I wanted, the unit was working. Until then I spent days talking with the vendor - who was VERY responsive but only offered a full Chinese language only documentation. Nothing for the country they sold this in. For this reason I would suggest finding another vendor - but at least you know and with the external documentation like that on esphome.io you'll make this work. This site covers the parameters fine. To understand how this unit works under the covers, you seem to have to learn chinglish as you auto-translate documents in Chinese. ## Features - HLK-LD2420 is a high-performance 24 GHz one transmitter, one receiver radar module - Its human body sensing algorithm adopts millimeter wave radar distance measurement technology and advanced proprietary signal processing technology of the S3 series chip, achieving precise perception of motion, micro motion, and standing human bodies. - HLK-LD2420 is mainly used to perceive whether there is movement or micro movement of the human body in the indoor scene perception area, and to refresh the detection results in real-time. - It has a maximum sensing distance of 8m for the moving human body, and can easily configure the sensing distance range, sensing sensitivity in different intervals, and refresh time - Supports GPIO and UART interfaces, plug and play, and flexibly applies to different intelligent scenarios and terminal products. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CLCTT2YV | | Best Sellers Rank | #361 in Radar Detectors | | Brand | EC Buying | | Brand Name | EC Buying | | Current Rating | 50 Milliamps | | Customer Reviews | 4.0 out of 5 stars 17 Reviews | | Item Weight | 0.01 Kilograms | | Manufacturer | EC Buying | | Material | Silicon | | Material Type | Silicon | | Maximum Supply Voltage | 3.6 Volts (DC) | | Measurement Accuracy | Β±0.5 meters | | Model | LD2420 | | Mounting Type | Surface Mount | | Output Type | Digital | | Sensing Distance | 8 Meters | | Specific Uses For Product | Indoor human motion detection | | Style | Modern | | Style Name | Modern | | Unit Count | 1.0 Count | | Upper Temperature Rating | 97 Degrees Fahrenheit | ## Product Details - **Brand:** EC Buying - **Current Rating:** 50 Milliamps - **Item Weight:** 0.01 Kilograms - **Material:** Silicon - **Style:** Modern ## Images ![LD2420 Radar Sensor Module 24GHz ISM Human Body Micromotion Millimeter Wave Radar Sensor Module AIOT Smart Home 8M 3.3V 50A - Image 1](https://m.media-amazon.com/images/I/51w-sMG1jJL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works with esphome and home assistant *by S***S on January 18, 2025* I've used two of these and they work well with home assistant and esphome. The recognized movement at a fair distance, say 30ft. Lots of different options to play with in the settings. ### ⭐⭐⭐⭐ Don't trust the description for this LD2420 *by P***N on December 9, 2023* First - if you want to know how to hook this up and get started quickly, search for ld2420 on esphome's site. Not only will you get access to the code to see an example, but there's a very nice module page that describes all the CORRECT hookups, in English without any false/misleading information. The problem with this unit is, simply put, that two different versions exist with the same look and feel and depending on what version, the hookup is very different. The original/old version (< v1.5.3) is most likely what you'll find when googling and it will absolutely NOT work - wrong baud rate and wrong TX pins. The unit I got was the newer (>= v1.5.3) version. This means OT1 is the TX and not OT2 and the baud rate on this unit is only 115200 - not the weird 256000 for the old version. I've found no way to tell which version the unit is by looking at it. Only once you ARE connected can you query the firmware version, and then know how to hook up the wires, and well - you get it. It's a mess. Once hooked up to an old ESP32 using TX2/RX2 for basic uart functionality I finally got the results I wanted, the unit was working. Until then I spent days talking with the vendor - who was VERY responsive but only offered a full Chinese language only documentation. Nothing for the country they sold this in. For this reason I would suggest finding another vendor - but at least you know and with the external documentation like that on esphome.io you'll make this work. This site covers the parameters fine. To understand how this unit works under the covers, you seem to have to learn chinglish as you auto-translate documents in Chinese. ### ⭐⭐⭐ Great component but hard to find english calibration software *by N***Y on November 26, 2025* Worked perfect in my project, but it was hard to find an english version of the software for it. ## Frequently Bought Together - EC Buying LD2420 Radar Sensor Module 24GHz ISM Human Body Micromotion Millimeter Wave Radar Sensor Module AIOT Smart Home 8M 3.3V 50A - EC Buying LD2410C Sensor Module HLK-LD2410 Human Presence Radar Sensor Module LD2410 Millimeter Wave Radar Sensor Module Non Contact 24GHz ISM Band Serial Port IO Level Output - EC Buying LD2412 Human Presence Sensor Module 24G Wide-Angle Millimeter Wave Radar Detection Module 75Β° 9M Radar Sensor Module --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/588120301-ld2420-radar-sensor-module-24ghz-ism-human-body-micromotion-millimeter](https://www.desertcart.pt/products/588120301-ld2420-radar-sensor-module-24ghz-ism-human-body-micromotion-millimeter) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-06-23*