*Display as high brightness OLED.
*Detectable (PM2.5/PM10, CO2, CO, O2, TVOC, HCHO.
*RS-485 output, connected to XE-B1.3 for data storage.
*Two sets of relay output (optional).
*SD card can store historical data (optional).
*DC4~20mA output (optional).
*Can be paired with large displays (optional).
*Compatible with wireless LoRa transmission (optional). 920-925MHz compliant with NCC low power RF regulations.