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LDIR05M inductive sensor radar
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LDIR05M inductive sensor radar
motion sensor radar

24GHz Human Presence Radar Sensor Module Inductive Sensor

This LDIR05M 24GHz high-performance radar sensor module is specially designed for human presence detection, motion induction and speed monitoring.

It supports dual detection of human and vehicles, with an ultra-wide speed range from 1km/h to 250km/h.

Built-in high anti-interference algorithm, it works stably all day and night, not affected by light, rain, fog, dust and extreme temperature.

Equipped with TTL serial output and adjustable detection distance, it is easy to connect with MCU and integrate into various industrial and smart devices.

  • 24GHz Global ISM Band, worldwide certification friendly
  • Human & Vehicle dual detection, human up to 50m, vehicle up to 200m
  • Wide speed detection range: 1km/h – 250km/h
  • Detect approaching, moving away and static human presence
  • TTL serial port output, simple connection & easy development
  • Adjustable sensitivity and detection distance
  • Industrial wide temperature: -40℃ ~ +80℃
  • Strong anti-interference, stable for outdoor & harsh environment
  • Compact structure, convenient for equipment installation

Main Parameters

Part number LDIR05M
Working frequency 24 -24.250GHz
Working voltage 12V,DC
Maximum operating current 34mA at VCC=12V
Typical working current 34mA at VCC=12V
Detection range Horizontal : 46°, vertical : 24° (3dB)
Detection distance Max 50 meters (human movement)
Detection distance max 200 meters (vehicle movement)
Working temperature -40℃~+80℃
Working humidity <93%RH
Overall dime 78.75*30mm

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Application

  • Human presence induction
  • Perimeter security alarm
  • Automatic door & smart lighting control
  • Traffic speed detection
  • Vehicle access monitoring
  • Industrial motion & position sensing
  • Smart building & warehouse access control
What is the maximum detection distance?
Up to 200m for vehicles, 50m for human movement.
What is the field of view?
Horizontal: 46°, vertical: 24° (3dB).
What output does it provide?
GPIO output (5V level signal for LED/driving) and TTL serial port (3.3V) with real-time target data.
How do I adjust detection distance?
By setting sensitivity via serial command (e.g., Sxx). Higher sensitivity = shorter detection distance (larger xx = less sensitive).
What are the power requirements?
6–36V DC, typical 34mA at 12V.
Is it affected by environment?
No. It operates reliably in -40°C to +80°C, humidity <93%RH, and is immune to dust, temperature, and humidity changes.
Can it detect stationary targets?
No. It detects moving targets only. Stationary objects (walls, parked cars) are filtered out as background noise.
Do I need to reset sensitivity after power-off?
Yes. Sensitivity is not saved to FLASH by default and must be reconfigured each time power is restored.

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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