Attributes

Brand	-
Category	Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin	-
Operating Voltage	3.3V - 5V DC
Output Type	Digital Switching (0/1)
Sensitivity Control	Adjustable Potentiometer
Interface Pins	3-Pin Header (VCC, GND, DO)
PCB Length	32mm
PCB Width	14mm
Mounting Hole Size	3mm Diameter
Operating Temperature	-30°C to +70°C
Indicator LEDs	Power (Red) and Trigger (Green)
Microcontroller Compatibility	Arduino, Raspberry Pi, STM32

5 reviews

Anonymous

Apr 15, 2026

Rating: 5/5

Reliable Knock Detector

Using this for a security alarm prototype. Triggers consistently on knocks.

Anonymous

Apr 06, 2026

Rating: 5/5

Perfect for School Project

Easy to wire and understand. Documentation online helped too.

Anonymous

Apr 05, 2026

Rating: 4/5

Sensitive but needs tuning

Good module but took some time to calibrate the potentiometer for my specific use case.

Anonymous

Feb 06, 2026

Rating: 4/5

Good value

Compact size fits well in small enclosures. Wish it had analog output option.

Anonymous

Feb 04, 2026

Rating: 5/5

Great for Arduino Projects

Works perfectly with my Uno. Sensitivity adjustment is smooth and responsive.

5 FAQ

Q: Is the output analog or digital?

A: This module provides a digital switching output (HIGH/LOW).

Q: What is the detection range?

A: It detects physical contact vibrations on the surface it is mounted to.

Q: How do I connect this to Arduino?

A: Connect VCC to 5V, GND to GND, and DO to any digital pin.

Q: Can it detect voice sounds?

A: It detects vibrations/shocks, not airborne sound waves like a microphone.

Q: Does this work with 3.3V logic?

A: Yes, it operates within 3.3V to 5V DC range.

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