Grove – mini PIR Motion Sensor – Seeed Studio

Resources:
PCBA_Grove – Mini PIR Motion Sensor v1.0
S16-L221D Datasheet.pdf
Seeed’s forum

Grove Mini PIR Motion Sensor Seeed Studio
The Grove Mini PIR Motion Sensor is a compact and energy-efficient infrared motion detection module designed for applications requiring a shorter detection range and minimal power consumption. With its 20x20x12 mm miniature design, it fits seamlessly into space-constrained projects while maintaining stable performance. It offers a recommended detection distance of around 2 metres at an optimal temperature of 25 C, despite the datasheet listing a range of 35 metres. The sensors sensitivity can be customised through a reserved pin on the rear for soldering a slide rheostat, providing enhanced flexibility for fine-tuning detection accuracy. Additionally, slightly adjusting the height of the plastic lens cap can further improve sensitivity when needed. Equipped with a Grove-compatible interface, this sensor supports both Arduino and Raspberry Pi, making it suitable for home automation, lighting control, security projects and motion-triggered devices.
Key Features:

Adjustable Sensitivity: Reserved pinout allows soldering a slide rheostat; lens height adjustment can also increase sensitivity.
Easy to Use: Grove interface for plug-and-play compatibility with Arduino and Raspberry Pi.
Compact Miniature Size: Extremely small form factor at 20 mmx20 mmx12 mm, ideal for tight installations.
Optimised Detection: Recommended detection distance of 2 m with best performance at around 25 C.
Low Power Consumption: Suitable for battery-powered and energy-efficient motion-triggered applications.

Package Content:

Grove – mini PIR motion sensorx1