# Tilt sensor module, SW-520D, 3.3-5V

> SW-520D tilt sensor module with sealed metal ball, for detecting tilt and vibration. Digital output (D0), trigger angle approximately 15°, ON-state resistance 10 MOhm, maximum output current >15 mA. Operating voltage 3.3-5 VDC, operating temperature 0-+80°C, dimension 32 x 14 mm. Includes status LED. Works with Arduino, ESP32 or STM32. Pins: D0, GND, VCC.

- Page: https://sigmanortec.ro/en/tilt-sensor-module-sw-520d-33-5v
- Price: 4.51 RON
- Availability: In stock; 1-2 zile
- Reference: 88145 · EAN: 5947349043532
- Category: Mechatronics and IoT > Sensors and Modules > Motion and Orientation Sensors
- Specifications: Input Voltage: 3.3 - 5 V; Input Voltage Type: “DC” in Romanian can mean **“de ce”**, which translates to **“why”** in English.
- Package (shipping data): 0.006 kg
- Updated: 2026-09-23
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 02:22 (Europe/Bucharest)

## Description

Quickly detects tilt and vibration in monitoring or alarm projects, provides easy-to-read digital output with Arduino, ESP32 or STM32, operates at 3.3-5V, typically triggers at approximately 15 degrees, includes status LED for visual confirmation and sealed metal ball sensor for rugged use.
This module with the SW-520D sensor with a metal ball is a simple and durable solution for detecting vibrations, movements, or angle changes. It has a digital output easy to read by any microcontroller such as Arduino, ESP32, or STM32, and the typical trigger threshold is around 15°. The module includes a status LED that lights up on trigger for quick visual confirmation. It operates at 3.3 to 5 VDC and provides a stable signal, useful in monitoring projects, shock alarms, or tilt detection.
Specifications:
Operating voltage: 3.3 - 5 VDC
Maximum output current: > 15 mA
Sensor type: sealed SW-520D metal ball
Trigger angle: approximately 15°
Resistance in ON state: < 10 Ohms
Resistance in OFF state: > 10 MOhms
Output type: Digital
Operating temperature: 0 - +80°C
Size: 32 x 14 mm
Pinout:
Pin number
Pin Name
Pin Description
1
D0
Digital output
2
GND
Ground
3
VCC
3.3-5 VDC
Usage:
Power the module at VCC and GND, then connect D0 to a digital pin of the microcontroller.
At rest, when the ball does not make contact, the D0 output is HIGH. When tilted or vibrated strongly enough, the ball makes contact between terminals and the D0 output switches to LOW, and the LED on the module lights up.
For more stable results, you can add a short software delay and use repeated readings to filter out short vibrations.