Power supply from 7 to 80 volts Galvanic isolation 2500 volts True IP67(IP69K optional) Stainless steel sheath Cable interface RS-232, RS-485 Aluminum alloy shockproof housing Working temperature -40...+85 C Length of measuring part up to 2 meters Adaptive multi-factor data filtering system Accurate measurements even with water in the tank Power supply resistant to strong magnetic field(optional) Master-slave chain of up to 5 FLS without any additional equipment