S4IoT Athen Sense System
Athen Sense is an industrial IoT board which features a communications module with CAT-M1/NB-IoT/(E)GPRS connectivity. Currently it is only reporting its battery voltage, temperature and Radio Access Technology (0 for GPRS, 8 for CAT-M1 and 9 for NB-IoT).
ESP8266 + BME680
Bosch Sensortec BME680 currently hooked up to a NodeMCU board (ESP8266) which is currently reporting temperature, relative humidity, pressure and VOC raw readings.