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Small rectangular green circuit board with white dome sensor and two blue potentiometers, 40mm by 20mm

Seeed Studio

Seeed Studio Grove PIR Motion Sensor

SKU CH-FHK4-DTW12

A compact Grove-compatible PIR motion sensor detecting movement up to 120 degrees and six metres with adjustable sensitivity and hold time from .3 to 25 seconds

  • Product typeSensors
  • Grove interface works with Arduino and Raspberry Pi
  • 120 degree detecting angle covers wide area
  • Adjustable range up to 6 metres and response time 0.3 to 25 seconds
  • Compact 20 by 40 by 15 millimetre module fits tight spaces
  • Low power passive infrared sensor with long operating life

Purpose and audience

The Grove PIR Motion Sensor detects human or particle movement within a defined range using passive infrared technology. It suits hobbyists, students and developers who need a simple motion trigger for Arduino or Raspberry Pi projects.

Setup checklist

Verify that your host board provides a 3V or 5V supply and a Grove-compatible connector for the SIG pin. Allow space for the 40mm by 20mm by 15mm module and confirm the 120-degree detecting angle covers the intended zone.

Fit and alternatives

Builders who need adjustable range up to 6 metres and response times between .3 s and 25 s will find this sensor convenient. Users requiring longer detection distances, narrower fields of view or integrated potentiometers should consider other modules.

How it compares

Measured against everything we stock in Sensors, Transducers & Thermometers, at today’s prices. Recalculated every night.

Price $24.99
Cheaper than about 66% of the 255 comparable items (median $39.99).

Specifications

Product
Product typeSensors

Questions about this item

What comes in the box and do I need to buy potentiometers separately?

The box contains one Grove PIR Motion Sensor module; the two adjustment potentiometers are soldered on the board so nothing extra is required.

Should I choose the 3 metre default range or the 6 metre maximum range for my project?

The sensor detects up to 6 metres after you turn the distance potentiometer; it ships set to roughly 3 metres.

What does the 120 degree detecting angle mean when the sensor is mounted on a wall?

It covers a 120 degree cone in front of the module, so motion anywhere inside that wedge up to the set distance triggers a HIGH signal.

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