The Pulsar® 73120 Basic 2-Feeder ORP Kit with 3M Extension Cable for Pulsar® Infinity and CCH® Endurance Pool Maintenance Systems is a basic oxygen reduction potential measurement kit with a 3M extension cable for compatible pool water maintenance systems. This component works with both the Pulsar® Infinity and CCH® Endurance lines. For best results, always refer to manufacturer directions for repairing, replacing, or adding components to pool maintenance systems.