NEWOPTO ALS21C-K1 I2C SMD Ambient Light Sensor Module
The NEWOPTO ALS21C-K1 is an I2C digital ambient light sensor module designed for SMD assembly, featuring a wide 1.7V to 3.6V operating range for direct integration with 3.3V microcontrollers like ESP32, STM32, and Raspberry Pi. It provides precise light intensity measurement for automatic display backlight and system power management.
Features
- I2C digital interface for direct microcontroller connection
- Wide operating voltage range from 1.7V to 3.6V
- Extended industrial temperature range from -40°C to +85°C
- Compact SMD package for space-constrained PCB designs
- ROHS compliant for environmentally conscious manufacturing
Out of stock
The ALS21C-K1 is a surface-mount ambient light sensor that converts light intensity into a digital signal via its integrated I2C communication interface. Its spectral response is engineered to closely match the human eye’s photopic vision, ensuring accurate ambient light assessment for adaptive brightness control systems.
Built for reliability in demanding environments, the sensor operates across an industrial temperature span and features low power consumption, making it suitable for battery-powered IoT devices, consumer electronics, and industrial control panels. The integrated infrared filtering enhances measurement accuracy by minimizing the impact of non-visible light sources.
Additional Information
| Weight | 0.01 kg |
|---|---|
| Dimensions | 10 × 8 × 5 cm |













