The RMS30-PL1 Cable Position Indicator is part of a family of smart sensors for the RMS30 Intelligent Monitor. The cable position indicator is used in conjunction with any of the range of RMS30 smart probes, and measures the deployment of cable into storage compartments, bores and other vertical drops. The RMS30 monitor reads the data from the sensor, via the RS485 communications connection, and displays it on the relevant channel pane.