Weber Sensors Flow Captor 24 VDC flow captor Type 4121.13 Metering flow switch with analog LED display…Measuring range 0-20 to 0-300 cm/sec in oil systems up to 100 bar pressure…IP 65 / NEMA 4 protection; 303 stainless steel sensor head x 1/2″ – 14 NPT…normally open PNP Transistor output