# Rotary encoder module, KY-040

> Rotary encoder module KY-040 with click button, compatible with Arduino and other development boards. Converts rotational movement into digital pulses, useful for menu control, volume adjustment or navigation. Provides 20 pulses per full rotation, operates at 5VDC and has dimensions of 32 x 28 x 19 mm. Can also be used for RPM measurement by counting pulses.

- Page: https://sigmanortec.ro/en/rotary-encoder-module-ky-040
- Price: 5.59 RON
- Availability: Out of stock
- Reference: 22155 · EAN: 5948823634772
- Category: Electronic components > Buttons and Interruptors > Rotary Encoders
- Package (shipping data): 0.007 kg
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 03:25 (Europe/Bucharest)

## Description

Rotary encoder with click for Arduino and other development boards, converts rotation into digital pulses for menu control, volume or navigation. It offers 20 pulses per rotation for precise adjustments, operates at 5VDC, has a compact size of 32 x 28 x 19 mm and can be used to measure RPM by counting pulses.
Rotary encoder with click, compatible with development boards such as Arduino, converts rotational movement into pulses.
It can also be used for RPM measurement projects by counting the pulses.
Specifications:
Supply voltage: 5VDC
Number of pulses per full rotation: 20
Dimensions mm: 32 x 28 x 19