ST107 is a versatile module for monitoring:
Tanks of all descriptions
Temperature sensors
Battery voltage
Inclinometer inputs (x and Y need an input each)
AC current sense
Irradiation sensor for solar performance
Equipped with:
four resistance inputs for resistance-type tank level or temperature sensors and 
three voltage inputs for voltage-type tanks sensors and battery voltages allows wide connection possibilities.
assignable relay output NO or NC.
It receives its power to operate via the twisted pair communication cable from the splitter power block.