an industrial wireless tank-level monitor designed to measure and report liquid levels — especially propane/LPG — in storage tanks. It’s built for hazardous environments (gas/vapor zones) and uses two different connectivity variants : 1-Cellular version (NB-IoT / Cat-M1 / GSM):t sends data directly over the cellular network to your backend or cloud server without needing any local infrastructure or gateways. 2-LoRaWAN version: You don’t pay for a cellular subscription, but you do need LoRaWAN network infrastructure (your own gateway, public LoRaWAN service, etc.). data sheet