{"product_id":"fermion-c4002-mmwave-human-presence-sensor-static-motion-detection-for-home-assistant-10m","title":"Fermion: C4002 mmWave Human Presence Sensor - Static \u0026 Motion Detection for Home Assistant (10m)","description":"\u003ch4\u003eIntroduction\u003c\/h4\u003e\n\u003cdiv\u003e\n\u003cp\u003eBeyond Traditional PIR Limits, delivers \"True Presence\" Automation with Micro-Motion Detection. Traditional PIR sensors often fail to detect stationary occupants, leading to inconvenient lighting deactivation. The\u003cspan\u003e \u003c\/span\u003e\u003cb\u003eFermion: C4002\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003emmWave radar module resolves this by utilizing 24GHz FMCW technology to detect\u003cspan\u003e \u003c\/span\u003e\u003cb\u003emicro-motions\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003e(such as breathing and chest expansion). Capable of distinguishing between moving, stationary, and micro-moving targets within a\u003cspan\u003e \u003c\/span\u003e\u003cb\u003e10×10 meter range\u003c\/b\u003e, this module serves as a reliable core component for smart lighting, HVAC control, and security monitoring in\u003cspan\u003e \u003c\/span\u003e\u003cb\u003eHome Assistant\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003eand IoT systems.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eStreamlined Home Assistant Integration\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned to simplify the development process, eliminating the need for complex reverse-engineering.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eHardware Ready:\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003eStandard UART interface connects easily to ESP32 controllers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSoftware Ready:\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003eFully compatible with\u003cspan\u003e \u003c\/span\u003e\u003cb\u003eESPHome (Home Assistant).\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003eA verified\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/wiki.dfrobot.com\/sen0691_c4002_mmwave_motion_homeassistant_tutorial\" target=\"_blank\"\u003eYAML configuration file\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eis provided for immediate deployment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInstant Entities:\u003cspan\u003e \u003c\/span\u003e\u003c\/b\u003eAutomatically exposes \"Occupancy,\" \"Distance,\" and \"Energy\" entities in Home Assistant upon flashing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/dfimg.dfrobot.com\/enshop\/image\/data\/SEN0691\/C4002%20DETECTION_0x0.jpg.webp\"\u003e\u003c\/p\u003e\n\u003cp\u003eFigure: True Static \u0026amp; Motion Human Presence of Fermion C4002 mmWave radar module\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eTrue Static Presence Detection (10x10m Range)\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eCapable of detecting individuals who are sitting, sleeping, or standing completely still. Ideal for bedrooms, offices, and bathrooms.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMotion Detection: Up to 11m (Walking \/ Running).\u003c\/li\u003e\n\u003cli\u003eStatic Detection: Up to 10m (Reading \/ Typing \/ Sleeping).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/dfimg.dfrobot.com\/enshop\/image\/data\/SEN0691\/DETECT%20RANGE_0x0.jpg.webp\" alt=\"Detection Range of Fermion C4002 mmWave radar module\" title=\"Detection Range of Fermion C4002 mmWave radar module\"\u003e\u003c\/div\u003e\n\u003cp\u003eFigure: Detection Range of Fermion C4002 mmWave radar module\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003ePrecision Control for Complex Environments\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eUnlike passive sensors with fixed ranges, the C4002 offers a software-configurable detection distance. This capability allows for precise matching of the sensor's coverage to the physical room layout.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eTargeted Monitoring\u003c\/b\u003e: Configure the sensor to cover only specific functional areas (e.g., a sofa or workspace) while strictly ignoring movement in adjacent backgrounds (e.g., hallways or open doors).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWall Penetration Management\u003c\/b\u003e: By setting a maximum distance threshold, users can prevent the radar signal from penetrating thin walls and detecting activity in neighboring rooms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAdaptability\u003c\/b\u003e: Suitable for diverse spaces, ranging from small bathrooms to large open-plan living rooms.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv id=\"Introduction\" class=\"content Introduction\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eIntelligent Environmental Filtering\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eTo prevent false triggers common in radar technology (e.g., swaying plants, moving curtains), the C4002 incorporates\u003cspan\u003e \u003c\/span\u003e\u003cb\u003eadaptive background noise learning\u003c\/b\u003e. The module automatically establishes a noise model of the environment, filtering out non-human interference to ensure triggers occur only upon actual human presence.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/dfimg.dfrobot.com\/enshop\/image\/data\/SEN0691\/Intelligent%20Environmental%20Filtering.gif\" alt=\"Anti-Interference of Fermion C4002 mmWave radar module\" title=\"Anti-Interference of Fermion C4002 mmWave radar module\"\u003e\u003c\/p\u003e\n\u003cp\u003eFigure: Anti-Interference of Fermion C4002 mmWave radar module\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"Applications\" class=\"content Applications\"\u003e\n\u003ch4\u003eApplications\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eSmart Lighting Automation:\u003cspan\u003e \u003c\/span\u003e\u003c\/b\u003eMaintains lighting based on true presence (breathing\/micro-motion) rather than large movements, solving the problem of lights turning off while reading or working.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHVAC Energy Management:\u003cspan\u003e \u003c\/span\u003e\u003c\/b\u003eAutomatically activates air conditioning or heating only when the room is actually occupied, optimizing energy efficiency in homes or offices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePrivacy-Friendly Elderly Care:\u003cspan\u003e \u003c\/span\u003e\u003c\/b\u003eDetects presence or prolonged inactivity in bedrooms or bathrooms without the need for invasive cameras or wearable devices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eConcealed Security:\u003cspan\u003e \u003c\/span\u003e\u003c\/b\u003eCapable of detecting intrusion through thin non-metal obstacles (like decorations or thin walls), allowing for a completely hidden security setup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv id=\"Specification\" class=\"content Specification\"\u003e\n\u003ch4\u003eSpecification\u003c\/h4\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003eOperating Voltage: 3.6 ~ 5.5V\u003c\/li\u003e\n\u003cli\u003eDetection Capability: Motion, Micro-Motion \/ Stationary Human Body\u003c\/li\u003e\n\u003cli\u003eMax Detection Distance: Motion 11m, Micro-Motion \/ Stationary 10m\u003c\/li\u003e\n\u003cli\u003eDetection Angle: 120° x 120°\u003c\/li\u003e\n\u003cli\u003eOutput Interface: OUT (Configurable IO), UART\u003c\/li\u003e\n\u003cli\u003eOperating Frequency: 24GHz ~ 24.25GHz\u003c\/li\u003e\n\u003cli\u003eLight Detection: 0 ~ 50 lux\u003c\/li\u003e\n\u003cli\u003eOperating Temperature: -20 ~ 85 ˚C\u003c\/li\u003e\n\u003cli\u003eProduct Dimensions: 22mm x 26mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"Shipping-List\" class=\"content ShippingList\"\u003e\n\u003ch4\u003eShipping List\u003c\/h4\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003eFermion: C4002 mmWave Human Presence Sensor x1\u003c\/li\u003e\n\u003cli\u003e5-pin Header x1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"Documents\" class=\"content documents\"\u003e\n\u003ch4\u003eDocuments\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/wiki.dfrobot.com\/sen0691\/\" target=\"_blank\"\u003eProduct Wiki\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cbr\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":41722562871429,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0565\/5819\/0725\/files\/1_b41d5cbc-03e5-4c7e-b8ab-ed52f55c7f56.png?v=1782129358","url":"https:\/\/robotpishop.com\/products\/fermion-c4002-mmwave-human-presence-sensor-static-motion-detection-for-home-assistant-10m","provider":"Robot Pi Shop","version":"1.0","type":"link"}