HC-SR501 PIR Motion Sensor – Blue
Dispatched from Aarhus, Denmark. Shipping calculated at checkout.
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PIR detects changes in infrared radiation, typically from movement; it is not a reliable detector of a person sitting still. Allow the module to settle after power-up.
HC-SR501 PIR Motion Sensor
The HC-SR501 PIR motion sensor detects changes in infrared radiation caused by moving people or animals. It is an affordable module for motion-triggered projects, such as detecting movement in a room. It is not a reliable stationary-presence detector.
The sensor has three pins: Vcc, output and ground. Its output uses a 3.3V TTL logic level, allowing use with suitable Arduino, Raspberry Pi, PIC, ARM, 8051 and other controller inputs. It can be used for motion alarms or automatic lighting projects.
Technical specifications
| Specification | Value |
|---|---|
| Supply voltage (Vcc) | 4.5V to 20V (typically 5V) |
| Output voltage (Dout) | High (3.3V) when motion is detected; low (0V) when inactive |
| Power consumption | Depends on board revision and operating conditions; the original 65 mA figure is unverified. |
| Coverage | 120° angle, up to 7 metres |
| Operating temperature | -20°C to +80°C |
| Operating modes | Repeatable (H), Non-Repeatable (L) |
| Adjustments | Sensitivity and delay time via potentiometers |
| Compatibility | Arduino, Raspberry Pi, PIC, ARM, 8051 etc. |
| Dimensions | Small and compact |
What is included?
1x HC-SR501 PIR Motion Sensor
Warranty and shipping
We do our best to test all electronics before sending them to you.
This helps us maintain quality and avoid unnecessary trouble during development. Faults can occur, but we encounter them very rarely. If there is a problem with the equipment you ordered, you can always contact us, and we will gladly help you resolve it.
We dispatch from Aarhus to Denmark and Sweden. Shipping options and prices are shown at checkout. Delivery time depends on availability, destination and shipping method; contact us before ordering if you need an item by a specific date.





