Grove Adjustable PIR Motion Sensor

Reference: SEEED 101020617

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Description

Grove - Adjustable PIR Motion Sensor is an easy to use Passive Infrared motion sensor, which can detect infrared object motion up to 3 meters. Any infrared object moves in its detecting range, the sensor outputs HIGH on its SIG pin. And you can adjust the SIG HIGH time up to 130s via the potentiometer, moreover, you can adjust the detection range via the other potentiometer. It will be a prefect motion sensor for your Arduino / Raspberry Pi project.

Features

Easy to use: Grove compatible interface and supports both Arduino and Raspberry Pi platforms
Flexible detecting: detect infrared object motion up to 3 m
Small-design: 20mm x 40mm
Wide application: it is commonly found in appliances and gadgets due to its low-cost, low-power,easy-to-use, and long-life cycle.

When there are any infrared object moves in its detecting range, the sensor will output HIGH on its SIG pin. And you can adjust the SIG HIGH time up to 130s via the potentiometer, moreover, you can adjust the detection range via the other potentiometer.

What is a PIR Sensor?

A passive infrared sensor is an electronic sensor that measures infrared light radiating from objects in its field of view. They are most often used in PIR-based motion detectors. PIR sensors are commonly used in security alarms and automatic lighting applications.

What does a PIR sensor detect?

PIR sensors are also known as PID or Passive Infrared Detectors. Thus, the PIR sensor can detect infrared radiation that is emitted by particles.

How does PIR Sensor work?

The PIR Sensor has 2 slots, and the slots are made of sensitive material. When the sensor is inactive, then the two slots will sense the same amount of IR. The ambient amount radiates from the outdoors, walls or room, etc.
When a human body or any animal passes by, it intercepts the first slot of the PIR sensor. This causes a positive differential change between the two bisects. But when the body leaves the sensing area, the sensor generates a negative differential change between the two bisects.

Click to explore more about PIR sensors.

Comparison of PIR Motion Sensor Series

Product	Features
Grove - PIR Motion Sensor	Max Distance:3-6m(3m by default) Angle:< 120°	Measuring distance and holding time adjustable response speed:0.3s - 25s
Grove-Adjustable PIR Motion Sensor	Max Distance:3-6m Angle: X=110° Y=90°	Measuring distance and holding time adjustable
Grove - mini PIR motion sensor	Max Distance:2-5m(2m by default) Angle: X=110° Y=90°	Sensitivity adjustable Mini-size
PIR Motion Sensor - Large Lens version	Max Distance:9m Angle:< 120°	The large lens can support long-range and wide-angle 2.54mm standard connector
PIR Motion sensor module	Max Distance:3-7m Angle:< 120°	Sensitivity & Delay time adjustable
Mini PIR Motion Sensor Module	Max Distance:7m Angle:< 100°	Mini-size
Grove Digital PIR Motion Sensor	Max Distance:3-12 m Angle:< 100°	Mini-size Simple and intuitive

Grove - mini PIR motion sensor will work with the same library as Grove - PIR Motion Sensor. So, please refer to the wiki page of Grove - PIR Motion Sensor and download the library from there to get started with this sensor.