Detailed Product Description Water level transducer is our patent products Two-line system current signal transmission Standard Output Current: 4~20mA Detecting Precision>1%FS High Performance, Low Price Power Supply: DC12V-24V Load resistance:200ΩWater level range:0~2.5m,0~5m,0~10m,0~20m,0~50m,0~100mWhole Size: ¢ 28×75(mm)