Attributes

Brand	-
Category	Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin	-
Operating Voltage	DC 4.5V - 20V
Static Current	< 60uA
Detection Distance	3 - 7 meters (adjustable)
Detection Angle	< 120 degrees cone angle
Output Signal	3.3V TTL High / Low
Trigger Mode	H (Repeatable) / L (Unrepeatable)
Blockade Time	2.5 seconds (default)
PCB Dimensions	32mm x 24mm
Operating Temperature	-15°C to +70°C
Package Contents	1 x HC-SR501 Sensor Module

5 reviews

Anonymous

Mar 08, 2026

Rating: 5/5

Reliable component

Bought five for a security system prototype. All arrived working and consistent with each other.

Anonymous

Feb 25, 2026

Rating: 4/5

Good sensitivity

Caught motion well in my hallway. Had to tweak the delay time but otherwise solid performance for the price.

Anonymous

Feb 14, 2026

Rating: 5/5

Great for learning

Used this for my final year project. Documentation online is plentiful which helped me troubleshoot quickly.

Anonymous

Feb 13, 2026

Rating: 4/5

Value for money

Cheap and effective. Just ensure you supply enough voltage or it might not trigger consistently.

Anonymous

Feb 11, 2026

Rating: 5/5

Perfect for Arduino Projects

Works exactly as described. Easy to calibrate sensitivity with the potentiometers. Used it for an automatic light project.

5 FAQ

Q: Can I use this directly with a 5V Arduino?

A: Yes, the module operates between 4.5V and 20V, so 5V is perfect for Arduino boards.

Q: Can I adjust the detection range?

A: Yes, there is a potentiometer on the board to adjust sensitivity and detection distance.

Q: Is this suitable for outdoor use?

A: The module itself is not weatherproof. You should house it in a waterproof enclosure for outdoor applications.

Q: Does it work with Raspberry Pi GPIO?

A: Yes, the 3.3V output usually works directly with Raspberry Pi GPIO pins without extra level shifting.

Q: What is the output logic level?

A: The output is 3.3V TTL, which is compatible with most microcontrollers and logic systems.

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