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KY-020 Tilt Switch Sensor module
KY-020 tilt switch sensor module with digital output—ideal for tilt detection, alarms, robotics, and DIY electronics projects.
The KY-020 Tilt Switch Sensor Module is a simple and effective sensor used to detect orientation or tilting. It features a reed switch inside a cylindrical casing that closes or opens the circuit when the module is tilted beyond a certain angle.
The module provides a digital output that can be directly interfaced with microcontrollers such as Arduino, ESP32, ESP8266, Raspberry Pi, and STM32. It operates on a wide voltage range and is easy to integrate into projects requiring motion or tilt detection.
Common applications include tilt alarms, orientation detection, robotics, anti-theft systems, and interactive DIY electronics projects. Its compact size, low cost, and ease of use make it ideal for both beginners and professionals.

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- Â Support 802.11b / n / g wireless standard
- Independent development MCU platform
- High cost performance
- Support UART / GPIO data communication interface
- Support STA / AP / STA + AP coexistence mode of operation
- Support SmartLink intelligent networking (APP)
- Support wireless upgrade firmware
- Support WPS network configuration
- Built-in onboard antenna &Temperature and humidity sensor
- RGB three-color light adjustable
- Provide rich AT command set configuration
- Free AiCloud cloud service for debugging
- 3 AA batteries / 5V adapter power supply
- Size: 61.6mm x 56.2mm;

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