Dwyer SFI-800-3/4-A711 Sight Flow Indicator/Transmitter is a reliable and accurate device for monitoring fluids. With a temperature range of -20 to 212°F and an accuracy of ±5% of FS, it operates with a power requirement of 8 to 28 VDC. It provides white lead normally open switch and green lead normally closed switch output signals. The wetted materials include polysulfone, UV stabilized polycarbonate, and 316 SS. It has a pressure limit of 150 psi and a maximum viscosity of 200 SSU. The electrical termination is black lead for ground, red lead for 15 to 28 VDC input, and white lead for 1 to 10 VDC output.