Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Operating Voltage | DC 4.5V - 20V |
| Detection Distance | Adjustable up to 3 meters |
| Delay Time | Adjustable from 5s to 200s |
| Trigger Mode | L (Low) and H (High) selectable |
| Output Signal | 3.3V TTL High / Low |
| Dimensions | 10mm x 12mm x 7mm |
| Viewing Angle | Approximately 100 degrees cone |
| Static Current | Less than 60 microamps |
| Working Temperature | -20°C to +80°C |
| PCB Size | Compact mini design for embedded projects |
Anonymous
Mar 22, 2026
Rating: 5/5
Perfect for my Arduino project
This sensor is incredibly small and works flawlessly with my Arduino Uno. The detection range is consistent, and the adjustment potentiometers make it easy to fine-tune sensitivity.
Anonymous
Mar 18, 2026
Rating: 5/5
Exceeded expectations
Fast shipping and the product works exactly as described. The pinout is clearly labeled, making integration into my circuit very straightforward.
Anonymous
Mar 13, 2026
Rating: 5/5
Tiny and powerful
I was surprised by how small this module is compared to the standard HC-SR501. It fits perfectly inside my compact enclosure without any issues.
Anonymous
Mar 09, 2026
Rating: 4/5
Good sensitivity
The sensor picks up movement well even through thin materials. Just ensure you provide a stable voltage supply to avoid false triggers.
Anonymous
Mar 08, 2026
Rating: 5/5
Reliable motion detection
Used this for a security prototype. The low static current is a huge plus for battery-powered applications. Highly recommended for IoT devices.
Anonymous
Mar 02, 2026
Rating: 4/5
Great value but needs calibration
Works well for automatic lighting. It took a few minutes to get the delay time right, but once calibrated, it triggers reliably when I walk by.
Q: Is there a library available for ESP32?
A: Since this is a digital output sensor, you do not need a specific library. You simply read the HIGH/LOW state from the GPIO pin in your code.
Q: How do I adjust the detection distance?
A: There is a small potentiometer on the board labeled 'Distance'. Turn it clockwise to increase range and counter-clockwise to decrease it.
Q: Can this sensor detect motion through glass?
A: Yes, PIR sensors like the HC-SR505 can generally detect motion through thin glass, though thick or tinted glass may reduce sensitivity.
Q: Does this come with headers soldered?
A: No, the module is shipped without headers to save space. You will need to solder your own pins or connect via wires.
Q: What is the maximum voltage this module can handle?
A: The operating voltage range is DC 4.5V to 20V. We recommend staying within 5V to 12V for optimal stability.
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