It helps you read the previously transmitted signal values from the modules. You can see the power of the received signal by switching to the "%" mode. The "V" Mode allows you to read the voltage value transmitted from your circuit. By setting it to the "Counter" position, you can obtain a counter that counts the transmitted signals as increasing values in the "V" mode and decreasing values in the "%" mode. You can reset the values using the Reset button. When you want to keep scores or measure values, you should place the Meter module on the "E" in your circuit.
There is an LED for each line that allows us to display the numbers on the counter.