The PS40 is a low-voltage device that allows a Seametrics fow sensor to drive multiple (up to four) pulse-responsive devices, such as solenoid-driven chemical metering pumps, counter timers, or remote totalizers. It requires an external DC power supply for operation and can provide power to a single low power Seametrics fow sensor, such as an MJE meter. It can also be used with a dry contact sensor, such as the MJR reed switch meter. FEATURES • Rugged ABS plastic housing • Optoisolated Transistor and relay outputs APPLICATIONS • Cooling tower/boiler water treatment • Pacing chemical metering pumps • Driving multiple pumps, counter timers, remote totalizers