Features It is suitable for the outer wall of non-metallic pipes without direct contact with liquids, and will not be corroded by corrosive liquids such as strong acid and alkali, and is not affected by scale or other debris. Intelligent liquid level reference adjustment and liquid level memory function, liquid level status display mode, multi-point series connection. The test is accurate and stable, and the boiling water level can be detected. Pure electronic circuit structure, non-mechanical working mode, stable performance and longevity. High stability, high sensitivity, strong interference ability, free from external electromagnetic interference. Specification:Item Type: Sensor Working Voltage: 5-12V Induction Principle: Capacitive Liquid Level Sensing Output Form : NPN Model: XKC-Y25-NPN Response Time: 500ms Output Current: 1~100mA Working Environment Temperature: -10~100°C Induction Thickness (Sensitivity) Range: ≤20mm Level Error: ±1.5mm Humidity: 5%~100% Material: ABS Waterproof Performance: IP67 Package List:1 x Sensor Package List 1 x Sensor