The LD2412 is a compact and sensitive 24GHz FMCW mmWave radar module for reliable presence detection. You can use this module as a replacement for your existing LD2412 in the CeilSense, UltimateSensor v2 or UltimateSensor Mini v2, but also as a standalone unit for your own ESPHome, ESP32, or other IoT projects.
The module detects not only movement, but also stationary or micro-moving persons. This makes it ideal for applications such as room presence detection, smart lighting, Home Assistant automations, and compact radar projects.
Features
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Suitable as a replacement module
Can be used as a replacement for the LD2412 in the CeilSense, UltimateSensor v2, and UltimateSensor Mini v2.
-
Also usable standalone for your own projects
Suitable for integration into your own electronics and home automation projects via UART and GPIO output.
-
Also detects stationary persons
Designed for presence sensing of moving, micro-moving, and stationary persons.
-
Up to 9 meters detection range
Adjustable range from approximately 0.75 to 9 meters, depending on configuration and application.
-
Wide detection angle
Detection angle of up to ±75° for a wide detection field.
-
Compact size
Small module of only 11 x 28 mm, convenient for modular sensors and compact custom designs.
-
Flexibly adjustable
Supports distance gates, sensitivity per zone, and delay times for finer tuning to your space.
-
Multiple mounting options
Supports both ceiling and wall mounting, depending on your enclosure or project setup.
Technical specifications
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Radar technology: 24GHz FMCW mmWave
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Frequency range: 24GHz – 24.25GHz
-
Detection distance: 0.75 – 9 meters adjustable
-
Detection angle: ±75°
-
Distance resolution: 0.75 meters
-
Supply voltage: 3.3V or 5V
-
Average current consumption: approx. 90 mA
-
Interfaces: 1x UART, 1x GPIO (3.3V logic)
-
Dimensions: 11 x 28 mm
-
Operating temperature: -40°C to 85°C
Applications
-
CeilSense replacement
Replace an existing LD2412 module in your CeilSense.
-
UltimateSensor v2 / Mini v2 replacement
Suitable as a standalone replacement module within the modular UltimateSensor line.
-
Own projects
Ideal for ESP32, ESPHome, Home Assistant, and other smart home or embedded applications.
Please note:
- This is a standalone radar module, not a complete sensor.
- For use as a replacement module, it is intended for products that already use an LD2412.
- For custom projects, basic knowledge of power supply, UART, and integration is recommended.
The LD2412 is a compact and sensitive 24GHz FMCW mmWave radar module for reliable presence detection. You can use this module as a replacement for your existing LD2412 in the CeilSense, UltimateSensor v2 or UltimateSensor Mini v2, but also as a standalone unit for your own ESPHome, ESP32, or other IoT projects.
The module detects not only movement, but also stationary or micro-moving persons. This makes it ideal for applications such as room presence detection, smart lighting, Home Assistant automations, and compact radar projects.
Features
-
Suitable as a replacement module
Can be used as a replacement for the LD2412 in the CeilSense, UltimateSensor v2, and UltimateSensor Mini v2.
-
Also usable standalone for your own projects
Suitable for integration into your own electronics and home automation projects via UART and GPIO output.
-
Also detects stationary persons
Designed for presence sensing of moving, micro-moving, and stationary persons.
-
Up to 9 meters detection range
Adjustable range from approximately 0.75 to 9 meters, depending on configuration and application.
-
Wide detection angle
Detection angle of up to ±75° for a wide detection field.
-
Compact size
Small module of only 11 x 28 mm, convenient for modular sensors and compact custom designs.
-
Flexibly adjustable
Supports distance gates, sensitivity per zone, and delay times for finer tuning to your space.
-
Multiple mounting options
Supports both ceiling and wall mounting, depending on your enclosure or project setup.
Technical specifications
-
Radar technology: 24GHz FMCW mmWave
-
Frequency range: 24GHz – 24.25GHz
-
Detection distance: 0.75 – 9 meters adjustable
-
Detection angle: ±75°
-
Distance resolution: 0.75 meters
-
Supply voltage: 3.3V or 5V
-
Average current consumption: approx. 90 mA
-
Interfaces: 1x UART, 1x GPIO (3.3V logic)
-
Dimensions: 11 x 28 mm
-
Operating temperature: -40°C to 85°C
Applications
-
CeilSense replacement
Replace an existing LD2412 module in your CeilSense.
-
UltimateSensor v2 / Mini v2 replacement
Suitable as a standalone replacement module within the modular UltimateSensor line.
-
Own projects
Ideal for ESP32, ESPHome, Home Assistant, and other smart home or embedded applications.
Please note:
- This is a standalone radar module, not a complete sensor.
- For use as a replacement module, it is intended for products that already use an LD2412.
- For custom projects, basic knowledge of power supply, UART, and integration is recommended.
