CJMCU SI1112 UV Light & Proximity Sensor Breakout Board (I2C, Micro USB)

The CJMCU SI1112 is a compact breakout board based on the Silicon Labs SI1112 UV index and proximity sensor IC. It communicates over I2C and includes a Micro USB port for easy power and programming. With dedicated WAK (wake), INT (interrupt), and RST (reset) pins, it offers full control for low-power IoT and wearable applications.

Key Features

• Based on Silicon Labs SI1112 UV index & proximity sensor
• I2C interface: SDA, SCL pins
• Control pins: WAK (Wake), INT (Interrupt), RST (Reset)
• Micro USB connector for power input
• 3.3V operating voltage with onboard regulator
• Includes male header pins
• Compact CJMCU purple PCB form factor
• Compatible with Arduino, ESP32, Raspberry Pi

Applications

UV index monitoring, proximity detection, wearable health devices, IoT environmental sensing, and low-power embedded systems.