How do I increase or decrease values on the COMDRONIC Ltd AC7-SP+ Manometer?

To increase or decrease values on the AC7-SP+ Manometer, you can use the ▲ ▼ buttons. Press the ▲ button to increase the value and the ▼ button to decrease it. If you need to add a digit, press the ► button. To enter a decimal point, press the ▼ button when the zero digit is showing. If you want to enter a negative number, press the ZERO button before adding any number. Please refer to the user guide for more detailed instructions and illustrations.
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