Ordered on weekdays before 14:00 = shipped the same day and delivered the next day in 98% of cases. Free returns 30-day reflection period 1-year warranty Ordered on weekdays before 14:00 = shipped the same day and delivered the next day in 98% of cases. Free returns 30-day reflection period 1-year warranty

Sound detection

Sound sensor module with small microphone KY-038

Sound sensor module with small microphone KY-038 – 2

Sound sensor module with small microphone KY-038 – 3

Sound sensor module with small microphone KY-038 – 4

Sound sensor module with small microphone KY-038 – 1

Sound sensor module with small microphone KY-038 – 2

Sound sensor module with small microphone KY-038 – 3

Sound sensor module with small microphone KY-038 – 4

OTRONIC

Sound sensor module with small microphone KY-038

Sound sensor module for Arduino to measure sound and use a digital or analog output.

SKU: OT2121-D122 Article number: AB004 EAN: 8720589817470 Location: D12.02

€ 1,60 Incl. VAT (€ 1,32 Excl. VAT)

Expected in stock: 26/11/2026

30-day reflection period
1-year warranty
Ordered on weekdays before 2:00 PM, shipped today
Free returns

HC-SR04 ultrasonic distance sensor

Alternative HC-SR04 ultrasonic distance sensor € 2,89 View this alternative

Sound sensor module with small microphone KY-038

Microphone sound detection module for Arduino with two outputs.
A0 for analog output, real-time output voltage from the microphone
D0 gives a high signal at a preset sound level with the potentiometer

Works on 3.3V - 5V

Dimensions
Length: 3.5cm
Width: 15.2cm
Height: 1.3cm

Read more

Sound detection
Potentiometer
3.3V - 5V
Compact size

Why choose this product?

Analog output – A0 provides real-time microphone output.
Digital threshold output – D0 switches at the set sound level.
Adjustable level – Use the potentiometer to set the sound level.
Suitable for Arduino – Designed for use with Arduino.

Specifications

Width	15.2cm
Operating voltage	3.3V - 5V
Length	3,5cm
Height	1,3 cm

Frequently bought together

Select Sound sensor module with small microphone KY-038 Sound sensor module with small microphone KY-038 € 1,60
Select Sound sensor module for Arduino Sound sensor module for Arduino € 1,50
Select 200 transistors set 10 types common triode 200 transistors set 10 types common triode € 7,20
Select 100 diodes set 10 types Rectifier / Schottky 100 diodes set 10 types Rectifier / Schottky € 6,65

Total: € 16,95

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Shipping & returns

Shipping

Ship to

Parcel with track & trace€ 7,70Within 24 hours
Pick up at PostNL location€ 7,40Within 24 hours
Letterbox parcel€ 3,70Within 2 business days
Letterbox parcel 24 hours€ 4,55Within 24 hours
Pick up in storeFree

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Returns

Not satisfied? You have 30 days after delivery to return the product.

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