Indicator is a 4-inch touch screen driven by ESP32 and RP2040 dual-MCU and supports Wi-Fi/BLE/LoRa communication. The board comes with Type-C and Grove interfaces, supports ADC and IIC transmission protocols, and can easily connect to other peripherals with rich GPIOs. Indicator is a fully open-source powerful IoT development platform for developers. One-stop Fusion service is also available for customization and quick scale-up. Features Dual MCUs and Rich GPIOs: Equipped with powerful ESP32S3 and RP2040 dual MCUs and over 400 Grove-compatible GPIOs for flexible expansion options. Real-time Air Quality Monitoring: Built-in tVOC and CO2 sensors, and an external Grove AHT20 temperature and humidity sensor for more precise Fully Open Source Platform: Leverage the extensive ESP32 and open-source ecosystem for infinite application possibilities. Description Indicator native firmware enables you to use it as a desktop air quality detector or you could customize one of your own styles. There are built-in tVOCs and CO2 sensors, and a Grove TH sensor is provided to connect externally to reduce heat interference to accurate temperature and humidity results. Color: White Material: plastic Package Contents: 1* Indicator Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.