SKU: SENS-2445
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HaiWang HW-M21-2 Microwave Radar Sensor Module, 10m Range

₹329.00 (Inclusive of all taxes)
Out of Stock

The HaiWang HW-M21-2 is a 10m-range active microwave radar motion sensor module featuring a planar microstrip antenna. It outputs a voltage signal upon detecting moving objects or vehicles, making it compatible with security systems, lighting controls, and automated gates.

Features

  • 10-meter detection range for moving objects and vehicles.
  • Planar microstrip antenna design for low power consumption and high consistency.
  • Strong anti-jamming performance, unaffected by temperature, humidity, dust, noise, or ambient light.
  • 180° hemispherical detection coverage with no dead zones.
  • Signal can penetrate non-metallic obstacles like glass, plastic, and thin foliage.

Out of stock

Description

The HW-M21-2 module operates on the principle of active microwave Doppler radar, transmitting and receiving signals via its integrated planar antenna. It detects motion by sensing frequency shifts in the reflected signal from moving targets, outputting a corresponding voltage signal for easy integration into control circuits.

Engineered for robust performance, the module maintains high sensitivity in indoor environments, with a slight reduction outdoors. Its design ensures reliable operation across varying environmental conditions, making it suitable for continuous monitoring applications in security, automation, and energy management systems.

Key Features

  • Active microwave induction with planar microstrip antenna.
  • Outputs a voltage signal upon motion detection for direct microcontroller interfacing.
  • Wide 180° hemispherical detection angle ensures comprehensive area coverage.
  • High immunity to environmental interference from temperature, humidity, airflow, dust, and light.
  • Capable of signal penetration through non-conductive materials like glass and plastic.
  • Low power consumption design optimized for always-on applications.
  • ROHS compliant construction for environmental safety.
  • High product consistency for reliable batch-to-batch performance.

Applications

  • Security system intrusion detection and perimeter monitoring.
  • Automatic lighting control for corridors, garages, and outdoor pathways.
  • Activation of automatic doors and gates in commercial or residential settings.
  • Traffic monitoring and vehicle detection for parking management.
  • Presence detection in smart home and building automation systems.

Technical Specifications

ManufacturerHaiWang
Item TypeRadar Sensor Module
Model NumberHW-M21-2
Detection RangeUp to 10 meters
Detection Angle180° (Hemispherical)
Detection PrincipleActive Microwave Doppler Radar
Output SignalVoltage Signal
Antenna TypePlanar Microstrip
Anti-InterferenceHigh (Unaffected by temp, humidity, light, noise)
Signal PenetrationThrough glass, plastic, thin foliage
ComplianceROHS

Frequently Asked Questions

What is the detection range and angle of the HW-M21-2 module?

The HW-M21-2 module has a maximum detection range of up to 10 meters for moving objects. It features a wide 180° hemispherical detection angle, providing comprehensive coverage with no blind spots in the forward hemisphere.

Can this radar sensor detect motion through walls or windows?

The microwave signal from this module can penetrate non-metallic, non-conductive materials such as glass, thin plastic, and foliage. However, it cannot penetrate conductive materials like metal or thick concrete walls, which will block the signal.

What output signal does the module provide, and how do I interface it?

The module outputs a voltage signal upon detecting motion. This signal can be connected directly to a microcontroller's digital input pin or an analog input (with appropriate conditioning) to read the detection state for integration into security systems, lighting controllers, or other automation logic.

Is the module's performance affected by weather or ambient light?

No, the module features strong anti-jamming capabilities. Its microwave-based detection is fundamentally unaffected by environmental factors such as temperature, humidity, airflow, dust, ambient noise, or changes in light levels, ensuring reliable operation in both indoor and outdoor settings.

Package Includes

  • 1 x HaiWang HW-M21-2 Microwave Radar Sensor Module

Additional Information

Weight 0.025 kg
Dimensions 10 × 8 × 4 cm