... Resolution: stroke 0.03%4.Parameter set: 3 touch buttons5. Sensor material:ABS /PVC6. Output signal: 4~20mA 2-wire,Provide ... material: ABS11.Pressure range: ±0.1MP12.Electronic unit shell material:Die casting aluminum,Plastic-sprayed surface13.Stroke : Liquid level:4m,6m ... level:3m,5m,7m,10m,15m Universal Ultrasonic level meter\sensor