GY-ML8511 UVA UVB Ultraviolet Light Sensor Module with Analog Output

The GY-ML8511 UVA UVB Ultraviolet Light Sensor Module is a compact breakout board designed to detect ultraviolet radiation from sunlight and other UV sources. It uses the ML8511 sensor with an integrated photodiode and amplifier to convert detected UV intensity into a proportional analog voltage, allowing easy connection to a microcontroller’s analog input.

The module detects wavelengths from approximately 280 nm to 390 nm, covering the UV-B spectrum and most of the UV-A spectrum. Its maximum sensitivity is around 365 nm. The analog output can be processed by Arduino, ESP32, Raspberry Pi Pico, STM32 and other ADC-compatible development boards to estimate UV intensity or create a UV index monitoring system.

The breakout board provides VIN, 3V3, GND, OUT and EN connections. Its enable pin supports active and power-saving standby operation, making it suitable for portable, battery-powered and IoT applications.

Key Features:

• ML8511 ultraviolet light sensor

• Detects both UV-A and UV-B radiation

• Sensitive wavelength range: approximately 280–390 nm

• Maximum sensitivity wavelength: approximately 365 nm

• Proportional analog voltage output

• Module working voltage: DC 3.3V–5V

• ML8511 sensor operating voltage: 2.7V–3.6V

• Typical sensor operating current: approximately 300 µA

• Typical standby current: approximately 0.1 µA

• Built-in signal amplification circuit

• EN pin for active and standby control

• Compact breakout-board design

• Easy connection to ADC-enabled microcontrollers

• Suitable for indoor and outdoor UV monitoring

Applications:

• UV index monitoring projects

• Sunlight intensity detection

• Sun-exposure warning devices

• Portable ultraviolet meters

• Weather monitoring stations

• Environmental monitoring systems

• Wearable electronics

• Smart agriculture projects

• Solar radiation monitoring

• Arduino and ESP32 projects

• IoT-based weather systems

• School and college science projects

Note: This module provides an analog voltage corresponding to UV intensity. Software calibration and calculation are required to obtain an estimated UV index or UV intensity measurement. Check the ADC input-voltage limit of your controller before connecting the OUT pin, especially when using ESP8266 boards.