CJMCU-3001 OPT3001 Digital Ambient Light Sensor

CJMCU-3001 OPT3001 Digital Ambient Light Sensor Product Description The CJMCU-3001 OPT3001 is a high-performance digital ambient light sensor designed for accurate measurement of light intensity in Lux. The OPT3001 features a spectral response closely matched to the human eye, providing more meaningful light measurements than conventional LDR-based sensors. Its integrated infrared rejection helps prevent invisible IR radiation from significantly affecting the measured light level. With a wide 0.01–83,000 Lux measurement range, automatic gain control, low power consumption, and a digital I²C interface, the sensor is suitable for precision light-monitoring applications. Key Advantages Human-Eye-Matched Response: Designed to closely follow the spectral response of the human eye. Excellent IR Rejection: Provides >99% typical infrared rejection, reducing measurement errors caused by infrared radiation. Wide Measurement Range: Measures light levels from 0.01 Lux up to 83,000 Lux. Automatic Gain Ranging: Automatically adjusts the measurement range according to the light level. Digital Output: Provides direct digital Lux readings through the I²C interface, eliminating the need for an external ADC. Very Low Power Consumption: Approximately 1.8 µA typical operating current, making it suitable for battery-powered devices. Compact Module: Easy to integrate into embedded systems, IoT devices, and portable electronics. Technical Specifications Parameter: Specification Module: CJMCU-3001 Sensor IC: OPT3001 Sensor Type: Digital Ambient Light Sensor Measurement Range: 0.01–83,000 Lux Interface: I²C / SMBus Supply Voltage: 1.6–3.6 V IR Rejection: >99% Typical Spectral Response: Human-eye matched Peak Sensitivity: Approximately 550 nm Operating Temperature: −40°C to +85°C Typical Operating Current: 1.8 µA Pins: VCC, GND, SCL, SDA, INT, ADDR Applications • Smart lighting systems • Automatic display brightness control • IoT devices • Smart home systems • Portable and battery-powered equipment • Light-level monitoring • Industrial and embedded systems • Cameras and electronic displays • Environmental monitoring Why Choose OPT3001? Compared with a conventional LDR or basic analog light sensor, the OPT3001 provides a digital Lux measurement, a wide measurement range, automatic gain ranging, a response closer to the human eye, and strong IR rejection. This makes it a better choice when consistent and meaningful ambient-light measurements are required.