McDonnell & Miller model number T5R is an electronic 5 second time delay relay for flow switches.
McDonnell & Miller offers time delay relay switches for use with liquid flow and air flow switches, as well as, low water cut-offs. These switches permit intermittent switching of controlled equipment and eliminate false signals and rapid cycling from turbulence or fluctuations. They can be remotely mounted on main control panels or conduit boxes.
Flow switch 120 volt, 20 second time delay relay. Direct mounting on series FS4-3, AF2 and AF3. Remote mounting on main control panel or conduit box with series FS-1, FS6, FS7-4 and FS-8W. Permits intermittent switching of controlled equipment and eliminates false signals and rapid cycling from turbulence or fluctuations. Solid state with 10" lead wires.