energy management prototype 3d model

Photorealistic ESP32 classroom energy management prototype on a wooden table. White rectangular plastic control box with rounded corners and front LCD displaying 26.4°C, 58% humidity, 320 lux, occupancy 3. Inside/around it: ESP32 development board, blue 2-channel relay module, white PIR motion sensor, white DHT22 temperature-humidity sensor, blue LDR light sensor, power supply, colored jumper wires. Connected loads include a white LED bulb and black square ventilation fan. Realistic PCB details, connectors, screws, solder joints and hand-wired electronics. Clean university engineering prototype, physically accurate proportions, realistic materials, natural lighting, product photography, highly detailed, photorealistic, no futuristic design.