The capacitive intelligent liquid level switch is a liquid level (object level) switch that can be used for measuring liquids and oils. No moving parts, high reliability, almost unaffected by steam, dust, or condensation, offering long-term stable and reliable operation, high sensitivity, and good linearity. The capacitive intelligent level switch uses a three-wire 4~20mA DC measurement signal, making it easy to adjust. It can be widely used in various fields including petroleum, chemical, metallurgy, electric power, papermaking, and pharmaceuticals.