Ratings | Answered Questions (16)
SKU: 140303001336
Brand : Made in China
Warranty : 3 Days
৳ 95.04
Category: Motion
The HC-SR501 PIR Motion Sensor Module is a low-cost Passive Infrared (PIR) sensor designed to detect motion from warm objects such as humans and animals. It provides a simple digital HIGH/LOW output, making it easy to use with Arduino, Raspberry Pi, and other microcontrollers. With adjustable sensitivity, delay time, and trigger modes, it is ideal for security, automatic lighting, smart automation, and robotics projects.
| Parameter | Details |
|---|---|
| Product Type | PIR Motion Sensor Module |
| Model | HC-SR501 |
| Sensor Type | Passive Infrared (PIR) |
| Operating Voltage | 5–20V DC* |
| Detection Range | 3–7m, Adjustable |
| Detection Angle | <120° |
| Output | Digital HIGH/LOW |
| Interface | VCC, OUT, GND |
| Sensitivity | Adjustable |
| Delay Time | Adjustable |
| Trigger Mode | H: Repeatable / L: Non-Repeatable |
| Lens | Fresnel Lens |
Note: Specification may vary slightly depending on manufacturer/batch.
The PIR sensor detects changes in infrared radiation within its sensing area. When a warm object such as a person moves across the detection zones, the infrared energy received by the sensing element changes. The internal circuit processes this change and produces a HIGH signal at the OUT pin.
The Fresnel lens focuses and segments infrared radiation from different areas of the detection field onto the PIR sensing element, creating multiple detection zones.. When a warm object moves from one zone to another, the IR radiation changes, which the PIR circuit detects as motion.
When motion is detected:

The module has two adjustable potentiometers:

The HC-SR501 uses a simple three-pin interface, making it easy to connect with development boards.

The OUT pin is the main signal connection. When the sensor detects motion, the output changes to a HIGH state, allowing a microcontroller to respond.
For a basic Arduino connection:

| PIR Sensor | Arduino |
|---|---|
| VCC | 5V |
| OUT | Digital Pin 2 |
| GND | GND |
After powering the module, allow approximately 30–60 seconds for initial stabilization before testing.
For reliable motion detection:
The HC-SR501 PIR Motion Sensor Module is suitable for:
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I did not understand clearly. detect are only human or any metal movement?
By nizam679739 on 01 Jan 2023
Hello, it detects human and other animals bodies. Doesn't detect metal movement.
By TechShopBD on 03 Jan 2023
What is the minimum sensing distance?
By Morshedalam on 14 Oct 2020
Ranging distance : 3-7M (adjustable)
By TechShopBD on 14 Oct 2020
My sensor can not work,what can i will do now.......
By milonrana on 07 May 2019
Order ID please.
By TechShopBD on 08 May 2019
Require complete circuit. Are you sell complete circuit? I require complete circuit which can detect motion and alarm me
By mujahid7eng on 04 Dec 2017
We don't. It's mentioned in our Technical policy. However, we have tutorial on this. https://www.techshopbd.com/tutorial-categories/mcu-projects/122/-techshop-bangladesh
By TechShopBD on 04 Dec 2017
Can I use 12V at it's VCC ?
By tanvir14ahmed on 27 Oct 2017
Working voltage: 5V-20V
By TechShopBD on 28 Oct 2017
The latest and best price of PIR Motion Sensor Module in BD is BDT 95.04 Taka. You can purchase the PIR Motion Sensor Module at the best price on TechShopBD.com or visit our office to pick yours up today.
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