ALS-PT19 Analog Light Sensor Module

The ALS-PT19 Analog Light Sensor Module is a compact and efficient solution for detecting ambient light in electronic projects. It offers a wide detection range and closely matches the spectral response of the human eye. With its simple analog voltage output, it’s ideal for beginners and projects that require straightforward light sensing without the complexity of digital interfaces.

Features:

• Wide Detection Range: Detects light in the 240–370nm UV spectrum (UVB and most UVA).
• Accurate UV Sensor: True UV sensor (not calibrated visible light). Divide output voltage by 0.1V to get UV index.
• Signal Amplification: Amplifies low nano-amp signals to readable voltage using an op-amp.
• Low Power Consumption: Operates with 2.5V – 5.5V DC. Voltage increases with light intensity.
• Easy to Use: Outputs analog voltage. No I2C configuration needed.

This sensor is ideal for upgrading photovoltaic-based light detection projects. It is more straightforward than digital alternatives like the Si1145, making it suitable for basic or analog-based applications. With strong IR rejection, it closely mimics the human eye’s sensitivity to visible light.

Specifications:

• Power Supply: 2.5V – 5.5V DC
• Output: Analog voltage
• Sensor Type: ALS-PT19 Photodiode
• Material: PCB
• Color: Green (may vary slightly)

Package Includes:

• 1 x ALS-PT19 Analog Light Sensor Module

Note: Light and display differences may cause slight color variations. Measurement tolerance is ±1–3cm.