air quality monitor 3d model

Realistic 3D model of an electronic air pollution monitoring system prototype mounted on a rectangular wooden board. The system contains a green PCB control board with an ESP32 microcontroller and a 16x2 LCD display. A DC power supply module is mounted on the board. Multiple sensors are connected with wires including an MQ135 gas sensor, another gas sensor module, a DHT11 temperature and humidity sensor, and a NEO-6M GPS module with a square ceramic antenna. The sensors are placed below the main board and connected using red, white, and black wires. The components are arranged vertically on a wooden base board like a mechanical engineering laboratory prototype. Realistic electronic components, accurate proportions, visible wiring connections, engineering prototype style, clean background, detailed hardware.