*When connected to Pentair's inline 4-20mA flowmeter for 3" plumbing (P/N 97014-4203KIT– sold separately) or similar 4-20mA flowmeters, this pump is capable of maintaining a constant flow based on the needs of your pool system. The digital input cable provided in the External Control Wiring Kit (P/N 353129Z– sold separately) is required to connect the flowmeter and pump.