The NuTec LS2000 level switch (photo) features a design for two-wire, 4 – 20-mA loop power that allows it to serve as a drop-in replacement for other two-wire mechanical float and paddle switches without any necessary wiring modifications. The LS2000 is also available for 115/230-V-a.c. or 24-V-d.c. input power and a 6-A relay output. It offers an advanced no-moving-parts thermal mass-flow sensor that minimizes maintenance. This switch is designed for service in tank and sump level applications, as well as fill/drain control and overflow detection. — Fluid Components International, San Marcos, Calif.