Features: Data Logger Module for Board integrates card slot for precise timestamped data logging, compatible for boards. Features onboards 3.3 v regulator for stable power supply, standardized pin layout for easy connection, and compactly design for space saving integration. Ideal for electronics enthusiasts, students, and engineers working on data acquisition projects requiring reliable time stampeds environmental monitoring. Perfect for applications, scientific experiments, and long terms temperature/humidity trackings with low power operation. Complete logging solution combining real time clock accuracy with expandable Card storage, simplifying sensors data recording for DIY electronics projects. Specifications: Component:Plastic Size:Approx.6x5.0cm/2.36x1.97inch Option Type:1pc,3pcs; Package Includes: Package A 1pc Data Logger Module Package B 3pc Data Logger Module note: Please allow 1-10mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.