SKU: SENS-1895
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Seeed Studio Studio Grove Digital PIR Motion Sensor - 3-5V DC, 100° Angle, Grove Interface

₹479.00 (Inclusive of all taxes)
Out of Stock

The Seeed Studio Studio Grove Digital PIR Motion Sensor is a passive infrared detector designed for 3.3V/5V microcontroller systems like Arduino and Raspberry Pi. It provides a simple digital output signal for detecting human motion within a 100° cone, making it ideal for automation and security projects.

Features

  • Digital PIR sensor with 3-5V DC operating voltage for broad microcontroller compatibility.
  • Wide 100° detection angle and a range of 3.2m to 12m for effective motion sensing.
  • Grove interface for plug-and-play connectivity, eliminating complex wiring.
  • Fast response time up to 1 second for real-time motion detection triggers.
  • Compact 20 x 20 x 11.5 mm form factor for easy integration into enclosures and prototypes.

Out of stock

Description

This Grove-compatible digital PIR (Passive Infrared) sensor detects motion by sensing changes in infrared radiation, typically emitted by warm bodies like humans. It outputs a clean digital high/low signal directly to a microcontroller’s GPIO pin, requiring no external signal conditioning or specialized libraries for basic operation.

Engineered for reliability, the sensor operates across an industrial temperature range of -25°C to 85°C, ensuring stable performance in varied environments. Its optimized Fresnel lens focuses IR energy onto the pyroelectric sensing element, providing consistent detection across the specified range and angle.

Key Features

  • High-sensitivity pyroelectric IR sensor element for reliable human motion detection.
  • Integrated signal conditioning outputs a stable, debounced digital signal.
  • Grove 4-pin connector standard for quick, reliable connection to Seeed Studio Studio base shields.
  • Wide operating voltage range (3V to 5V DC) compatible with 3.3V and 5V logic systems.
  • Robust construction with a precision Fresnel lens for consistent detection performance.
  • Low-power design suitable for battery-powered or always-on monitoring applications.

Applications

  • Smart home automation for lighting control and occupancy sensing.
  • Security system intrusion detection and alarm triggering.
  • Energy management systems to control HVAC and appliances based on room occupancy.
  • Interactive displays and kiosks that activate upon detecting a user.
  • Prototyping and educational projects for robotics and IoT motion sensing.

Technical Specifications

Manufacturer / BrandSeeed Studio Studio
Model NameGrove Digital PIR Motion Sensor
Operating Voltage3 V to 5 V DC
InterfaceGrove (Digital)
Detection Range3.2 m to 12 m
Detection Angle100°
Response TimeUp to 1 s
Output SignalDigital High/Low
Operating Temperature-25°C to 85°C
Dimensions (L x W x H)20 x 20 x 11.5 mm
WeightApprox. 3 g

Frequently Asked Questions

What is the output signal type of this Grove PIR sensor?

The sensor provides a clean digital output signal. It outputs a logic HIGH (typically 3.3V or 5V, matching your supply voltage) when motion is detected and a logic LOW when no motion is present. This signal can be read directly by a microcontroller's digital input pin without additional analog-to-digital conversion.

How do I connect this sensor to an Arduino or Raspberry Pi?

Connect it via any Grove-compatible base shield or adapter cable. The 4-pin Grove connector carries VCC (3-5V), GND, and the digital signal (SIG) pin. For non-Grove systems, you can use Jumper wires: connect VCC to 5V/3.3V, GND to ground, and the SIG pin to any digital input pin on your microcontroller (e.g., Arduino D2 or Raspberry Pi GPIO4).

What is the detection range and how can I adjust it?

The specified detection range is from 3.2 meters up to 12 meters under ideal conditions. The range can be influenced by the size and temperature of the moving object, as well as environmental factors. Some versions of the module may have a potentiometer to adjust sensitivity, which indirectly affects the effective range. Refer to the specific product documentation for adjustment features.

Does this sensor require any external libraries or code?

No specialized libraries are required for basic operation. You can read its digital output pin state using standard GPIO functions in Arduino (`digitalRead()`), Raspberry Pi (`Raspberry Pi.GPIO`), or other microcontroller frameworks. This simplifies integration and reduces code overhead for motion-triggered projects.

Package Includes

  • 1 x Seeed Studio Studio Grove Digital PIR Motion Sensor

Additional Information

Weight 0.003 kg
Dimensions 2 × 2 × 1.15 cm