UV Light Sensor Lite-On LTR-390UV-01 RAK12019

The RAK12019 UV Light Sensor is based on the Lite-On LTR-390UV-01 chipset and is part of the RAKwireless WisBlock sensor series. It can precisely measure both UV intensity and ambient light intensity. The I2C communication interface ensures the module is immune to electrical noise, making it more reliable than analog-output sensors.

This module is an excellent choice for greenhouse control systems, where it can help protect plants from excessive UV exposure. It is also suitable for UV level warning systems and for use in building automation projects, such as smart lighting and shading control.

With its wide dynamic range, high-resolution output, and ultra-low power consumption, the RAK12019 delivers accurate and efficient performance. Thanks to its temperature compensation circuit and ability to operate in extreme conditions from -40 °C to +85 °C, it is highly dependable for both indoor and outdoor applications.

Key Features

• Dual function: Ambient Light Sensor (ALS) or Ultraviolet Light Sensor (UVS)

• I2C interface supporting Standard Mode (100 kHz) and Fast Mode (400 kHz)

• Ultra-low power consumption with sleep mode

• 13 to 20 bits effective resolution

• Wide dynamic range of 1:18,000,000 with linear response

• Human-eye-like spectral response

• Automatic rejection of 50 Hz / 60 Hz light flicker

• Operating voltage: 1.7 V – 3.6 V

• Current consumption: 1 µA – 110 µA

• Operating temperature: -40 °C to +85 °C

• Built-in temperature compensation circuit

• Programmable interrupt function for ALS and UVS with thresholds

• RoHS and halogen-free compliant

• Module size: 10 mm × 10 mm