Prevent surge voltage, over voltage, over current and reverse polarity protection; Test to that it is to overload and shock, and accurately ensures overload capability; Implement anti-electromagnetic interference capability to avoid problems in complex electromagnetic environments; parts are used on all sensitive chips to maintain long-term stability. Type: Humidity sensor Model: Other Uses: position sensor : Other Measuring range: 0-5mH2O / 50kPa; Measuring medium: water; Power supply: 24VDC; Output signal: 4-20mA; Accuracy: +/-0.5% ; Overload capability: twice the full-scale pressure; Operating temperature: -20 Celsius-120 Celsius Compensation temperature range: -10 Celsius-80 Celsius ZTC : (typical): +/- 0.02% / c : (typical): +/- 0.02% / c; Long-term stability: (typical): +/-0.1% / year; Waterproof rating: IP68; Load resistance: less than (U-10) / 0.02 Ohm; Explosion type: Exia II CT6 Range: 3 meters colour:Silver, black Material:metal size:Length: 5m Package Contents: 3 x Liquid Level Sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.