24GHz Radar Mmwave Sensor Human Presence Sensor Module
The LDIR273 is a compact, low-power, highly integrated 24GHz 1T1R mmWave radar module. Based on Doppler principle and advanced algorithms, it provides reliable detection of both human motion and micro-motion (stationary presence), outperforming traditional PIR sensors.
Why Choose the LDIR273?
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Detects Motion & Stationary Presence: Unlike PIR sensors, it senses both moving and still human bodies (micro-motion like breathing), ensuring lights don’t turn off when you’re sitting still.
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Works Behind Non-Metal Enclosures: Unaffected by temperature, light, or dust. Can be embedded inside plastic, glass, or wood enclosures for clean industrial design.
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Compact & Easy to Integrate: Small 18×17mm size, wide 3.3-5.5V power input, and standard UART/GPIO interfaces. Ideal for smart locks, panels, and lighting.
Main Parameters
| Working frequency | 24.0-24.25 GHz |
| Number of transmission and reception channels | 1T1R |
| Transmission power | 10 dBm |
| Receiving noise figure | 10 dB |
| Horizontal FOV | 100 Degree |
| Vertical FOV | 60 Degree |
| Detection range | 0.2 – 15 m |
| Package size | 18×17 mm² |
| Operating voltage | 3.3-5.5 V |
| Operating temperature | -40 to 85 |
Get Free Quote of 24GHz Radar Mmwave Sensor Human Presence Sensor Module
Typical Applications
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Smart Lighting: Human presence detection to keep lights on steadily.
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Smart Door Locks: Wake up face recognition or touchpad when a person approaches.
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Smart Switch Panels: Backlight automatically turns on as hand nears.
Technical Support & Custom Solution
We provide datasheet, dimension drawing, interface protocol, demo code and technical support.
Support sample test, ODM/OEM customized service, welcome global customers to inquire and cooperate.
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