Attributes

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

6 reviews

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.

5 FAQ

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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