1.Description:ultrasonic level sensor 2.Accuracy:0.25% 3.Blind spot:0.2~0 ... has a lightning protection, overvoltage, overcurrent protection circuit H-type ultrasonic liquid level meter installation, maintenance, calibration simple. The products ... maintenance features. 2.Product Specification:Item The Specification of ultrasonic level meterModelH ultrasonic level meterMeasuring range0-3m,0-6m,0-10m,0 ...