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When inspecting the grounding system in electrical cabinets, buildings, or factories, measuring the ground resistance is almost mandatory. If the ground resistance value is not met, the lightning protection and electrical protection system will not function as designed.

When renovating a house, tiling, painting walls, or buying furniture, many people need to know the room's dimensions to calculate the appropriate amount of materials. Measuring with a tape measure is manageable, but it can be quite time-consuming for large rooms or when multiple measurements are required.

Many people looking for a miniature multimeter often wonder if such a small size is sufficient for their needs. In reality, most modern mini multimeters still fully support basic measurements such as AC voltage, DC voltage, resistance, and continuity testing.

## What is a Flow Switch? **_[Flow switches][1]_**, also known as flow control switches, are devices used to detect and monitor the presence or flow rate of