Lino LNM-101 smart deep well rs485 10m submersible water tank level sensor 12v is based on the principle that the measured liquid static pressure is proportional to the height of the liquid. It is made of advanced isolated diffused silicon sensitive elements or ceramic capacitor pressure sensitive sensors. The static pressure is converted into an electrical signal, and then passed through Temperature compensation and linear correction, converted into a standard electrical signal (generally 4 ~ 20mA/1 ~ 5VDC) is a pressure sensor for measuring liquid level, which can also be called "static pressure liquid level gauge, liquid level transmitter, Liquid level sensor, water level sensor".