Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Sensor Type	Pyroelectric Infrared (PIR)
Detection Angle	120 degrees
Detection Distance	Up to 7 meters
Operating Voltage	DC 3.3V - 5V
Output Signal	Digital High/Low (3.3V)
Delay Time	Adjustable (5s - 300s)
Blocking Time	Adjustable (0.3s - 18s)
PCB Dimensions	32mm x 24mm
Mounting Hole Diameter	2mm
Application Scope	Smart Home, Security Systems, Automation

6 reviews

Anonymous

Mar 29, 2026

Rating: 4/5

Good sensitivity, needs calibration

The module detects motion well, but I had to spend some time calibrating the delay time to prevent false triggers from my ceiling fan. Once set up, it has been reliable.

Anonymous

Mar 28, 2026

Rating: 5/5

Excellent build quality

The PCB looks clean and the soldering points are solid. I integrated this into a smart lighting system, and it responds instantly to movement. Highly recommended for hobbyists.

Anonymous

Mar 26, 2026

Rating: 5/5

Perfect for my Arduino project

This sensor works flawlessly with my Arduino Uno. The sensitivity adjustment pots are very responsive, and the detection range is accurate as described. Great value for money.

Anonymous

Mar 22, 2026

Rating: 4/5

Reliable for indoor use

Works great inside the house for hallway lights. The 120-degree angle covers the whole corridor. Just note that it is designed for indoor temperatures and might need shielding if used outdoors.

Anonymous

Mar 10, 2026

Rating: 3/5

Decent but range varies

The sensor works, but the 7-meter range seems optimistic in a cluttered room. I get about 5 meters reliably. Still, for the price, it is a decent component to have in the kit.

Anonymous

Mar 05, 2026

Rating: 5/5

Great for learning electronics

Bought this for a university project on smart homes. The documentation online is plentiful, and the module itself is very forgiving to wire up. It worked on the first try.

5 FAQ

Q: Can this sensor detect motion through glass?

A: No, PIR sensors cannot detect infrared radiation through glass or solid walls. The lens must have a direct line of sight to the moving object.

Q: Does this come with a Fresnel lens installed?

A: Yes, the white dome-shaped Fresnel lens comes pre-installed on the module to focus infrared signals onto the sensor element.

Q: What is the difference between the two potentiometers on the board?

A: One potentiometer adjusts the sensitivity (detection distance), and the other adjusts the trigger delay time (how long the output stays high after motion stops).

Q: Can I use this to trigger a 220V light bulb directly?

A: No, this module outputs a low-voltage digital signal. You must use it to trigger a relay module or a transistor circuit that can safely handle high-voltage loads like light bulbs.

Q: Is this module compatible with Raspberry Pi?

A: Yes, it is fully compatible. Since the output is 3.3V logic, you can connect the OUT pin directly to a GPIO pin on the Raspberry Pi without a level shifter.

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