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Home / Computer Hardware, Monitors & Peripherals / HC-SR501 Human Body Infrared Sensor Module, Pyroelectric Induction Switch SR505 SR602

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Operating Voltage DC 4.5V - 20V
Standby Current < 50uA
Detection Angle 110 Degree Cone
Detection Distance 3 - 7 Meters
Trigger Mode L (Single) / H (Repeatable)
Output Signal 3.3V TTL Level
Time Delay 5s - 300s (Adjustable)
Block Time 2.5 Seconds (Default)
PCB Dimensions 32mm x 24mm
Operating Temperature -15°C to +70°C

5 reviews

A

Anonymous

Mar 25, 2026

Rating: 5/5

Works perfectly with Uno

Very easy to integrate. The potentiometers for time and sensitivity are easy to adjust with a small screwdriver.

A

Anonymous

Mar 22, 2026

Rating: 4/5

Good value for money

Does the job well. Range is decent indoors. Had to tweak the sensitivity to avoid false triggers from pets.

A

Anonymous

Mar 18, 2026

Rating: 4/5

Solid component

Sensitive and responsive. Just ensure you provide enough voltage for stable operation.

A

Anonymous

Feb 14, 2026

Rating: 5/5

Great for beginners

Clear pinout labeling. Worked on the first try with my Raspberry Pi project.

A

Anonymous

Feb 13, 2026

Rating: 5/5

Reliable motion detection

I bought ten of these for various automation tasks. Consistency across all units is impressive.

5 FAQ

Q: How do I adjust the sensitivity?

A: Use the small potentiometer labeled 'S' on the PCB to tune the detection distance.

Q: What is the maximum detection range?

A: Under ideal conditions, it can detect motion up to 7 meters away.

Q: Can I use this outdoors?

A: This module is not waterproof and is designed for indoor use only.

Q: Is this compatible with 3.3V logic?

A: Yes, the output signal is 3.3V TTL, making it safe for most microcontrollers.

Q: Does it come with jumper wires?

A: No, the module is sold separately. You will need to source your own connecting wires.

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