2331211-2 is an AmbiMate MS4 Series Sensor Module Development Kit designed for rapid prototyping and integration with Raspberry Pi and Arduino platforms. This kit includes the AmbiMate MS4 sensor module (part number 2314277-2) featuring four core sensors for motion (PIR), light, temperature, and humidity, along with eCO2 (equivalent carbon dioxide) sensing capability. The module operates on 3.3 VDC input with I2C communication protocol and features an interrupt-driven event pin for real-time motion detection. Temperature sensing ranges from 5°C to +50°C with ±1°C accuracy, relative humidity measurement covers 5% to 95% RH with 3% accuracy, and eCO2 detection spans 400-8192 ppm with a 60-second acquisition rate. The compact design with vertical header mounting and common seven-position connection makes it ideal for indoor lighting, building automation, connected home, air quality monitoring, and energy management applications.