AQM-1000 LoRa signal consists of  sensor device name (AQM), ID number (B1 ~ Bi), Sequence number, each measured item name (CO2, PM2.5, Temperature, Humidity, HCHO, TVOC, etc.) and the associated data consecutively in JSON format. LoRa signals from each AQM-1000 are transmitted to the LoRa Gateway (LRMQ-1000).

LRMQ-1000 encapsulates the received LoRa signal into MQTT format with a predefined Topic and then retransmit the MQTT signal to the MQTT server (MQSVR) using 2.4 GHz WiFi for further processing.

MQTT Server parses each received MQTT messages into CO2, PM2.5, Temperature, Humidity, HCHO, TVOC values for each individual AQM-1000 device. The processed values can be displayed in the remote PC monitor as shown in the figures.