Dwyer SFI-801-3/4 Sight Flow Indicator/Transmitter is a reliable and accurate device for monitoring fluid flow. With a temperature range of -20 to 212°F and an accuracy of ±5% of FS, it provides precise readings. It operates on a power requirement of 8 to 28 VDC and has electrical connections for easy installation. The output signal includes normally open and normally closed switches for added convenience. With compatibility for various fluids and a pressure limit of up to 150 psi, it is suitable for a wide range of applications. The product also features a maximum viscosity of 200 SSU and electrical termination options for easy integration into existing systems.