The additional module for 2 inputs and 2 outputs can be used to control the WWC-4N relay box. This makes it possible to switch contactors, valves, motors, etc. for dosing processes. The 2 inputs can be used to tare the scale, reset it to zero, or start a program. A variety of programs are available in the WWA-1.
LEDs on the module indicate the status of the respective output and inputs.