Compact size and low feed rates make the Pro-Series Flex-Pro A2 suited to smaller treatment systems. Higher feed capacity units also are offered. Benefits of the product include peristaltic technology at an affordable price; Flex-A-Prene pump head tubing with up to four times longer service life; automated parts per million dosing; dual 4-20 mA input (primary speed control/secondary trim), pulse inputs and remote start and stop; maintenance-free variable-speed motor; built-in patented tube failure detection; and NEMA 4X/IP66 wash-down.