KY-020 Tilt Switch Sensor Module | 3.3V–5V 3-Pin Motion & Angle Detection Sensor for Arduino, ESP32 & Robotics Projects

Product Description

The KY-020 Tilt Switch Sensor Module is a simple and reliable motion-activated switch designed to detect changes in orientation or position. It uses a ball-bearing metal switch that closes or opens the circuit when tilted beyond a certain angle, providing a digital HIGH or LOW signal output.

Compact and easy to use, this module operates on 3.3V–5V, making it fully compatible with Arduino, ESP32, Raspberry Pi, and other microcontrollers. It’s perfect for motion detection, anti-theft systems, angle sensing, and robotics applications.

Key Features

• Model: KY-020 Tilt Switch Module

• Operating Voltage: 3.3V – 5V DC

• Output Type: Digital (HIGH/LOW depending on tilt position)

• Sensor Type: Ball-type mechanical tilt switch

• Interface Pins: VCC, GND, DO (3-pin header)

• Indicator LED: Lights up when switch is triggered

• Response Time: Instant (mechanical switch response)

• Mounting Holes: Included for easy installation

• Compatibility: Arduino, Raspberry Pi, ESP32, STM32, and similar boards

• Size: Compact PCB design for small electronics projects

Advantages

• Simple and reliable orientation sensing.

• Wide voltage compatibility (3.3V–5V).

• Digital output easily read by microcontrollers.

• LED indicator for easy testing and debugging.

• Compact design suitable for robotics and motion sensing.

Applications

• Motion and tilt detection

• Anti-theft and vibration alarm systems

• Angle and position monitoring

• Robotics and automation

• DIY Arduino and educational kits