electronics enclosure 3d model

Technical 3D exploded view of an IoT electronics controller box. The top cover is hovering slightly above the base, showing the inside clearly. Inside the grey ABS box, there is a PCB with visible electronic components: an ESP32 microcontroller, a blue 4-channel relay module, a yellow AC-to-12V power supply module, a small buck converter, and a fuse holder. Show realistic multicolored wiring (red, black, yellow wires) connecting the modules nicely. Along the bottom edge of the PCB, there are multiple green screw terminal blocks for sensor connections. The box has mounting ears on the outside. Professional studio lighting, white background, engineering diagram style, 4K resolution, sharp focus on internal circuits.