The Super Snooper line of Modbus scanners include the ProVu PD6080 Series of 1/8-DIN digital panel meters, and can be set up as Modbus RTU masters, slaves or snoopers, monitoring multiple Modbus devices for up to 16 process variables, including level, interface level, density and temperature. The meters provide two independently programmed analog inputs and an array of math functions for sum, difference, average and ratio calculations. They include dual analog inputs and an RS-485 serial communications module, allowing integration of existing 4-20-mA transmitters and Modbus devices on the same display.