Light Intensity Illumination Module GY-302

The GY-302 BH1750 Light Intensity Sensor Module is a compact and high-precision digital illumination sensor designed for measuring ambient light intensity. It is based on the original ROHM BH1750FVI sensor chip, which integrates a 16-bit analog-to-digital converter for accurate lux measurements.

Unlike traditional analog light sensors, the GY-302 provides direct digital output through the I2C communication interface, eliminating the need for external ADC components and reducing software complexity. The sensor closely matches the human eye’s spectral sensitivity, making it ideal for applications that require realistic ambient light detection.

The module supports a wide measurement range from 0 to 65535 lux, enabling precise light sensing in both low-light and bright environments. Due to its low power consumption and easy integration, the module is widely used in smart lighting systems, display brightness control, automation projects, and environmental monitoring applications.

Specifications

• Model: GY-302
• Sensor Chip: BH1750FVI (ROHM Original)
• Sensor Type: Digital Ambient Light Sensor
• Output Type: Digital Lux Output
• Communication Interface: I2C
• Built-in ADC Resolution: 16-bit
• Measurement Range: 0 – 65535 lux
• Operating Voltage: 3V – 5V DC
• Module Dimensions: 13.9mm × 18.5mm
• Light Detection: Ambient light intensity
• Calibration Requirement: Not required

Applications

• Automatic brightness control systems
• Smart lighting systems
• Environmental light monitoring
• Weather stations
• IoT sensor projects
• Arduino projects
• Raspberry Pi applications
• Display backlight adjustment
• Home automation systems
• Industrial light measurement systems