The LPC420R (Level Probe Converter with Relays) shall sense liquid level and provides a 4 to 20 mA analog output for use by a pump controller or PLC to control liquid level. The LPC420 shall monitor the ten electrodes on a conductance Level Probe, and provide an analog signal that is proportional to the level. The LPC420R shall provide 10 relay outputs with contacts that close as the liquid covers the respective Level Probe electrodes.