*** Requires a corTalk® RBT1 and RMU3 to use. *** Contact us at '[email protected]' to purchase. This app is for configuring the corTalk® RMU3 (Remote Monitoring Unit 3) with the new RBT1 Bluetooth interface cable. The cable functions as a complete RMU3 programming interface but only requires the Bluetooth connection of your phone. The RMU3 is used to monitor a cathodic protection rectifier with accurate measurement of a wide variety of signals; it can also control the rectifier for surv