... Resolution: stroke 0.03%4.Parameter set: 3 touch buttons5. Sensor material:ABS /PVC6. Output signal: 4~20mA 2-wire,Provide ... MODBUS7. Relay output:Floor\Highest alarm and control (material level/liquid level)8. Temperature range: -40°C~ +75°C9. Protection ... -sprayed surface13.Stroke : Liquid level:4m,6m,8m,12m,15m,20m,30m Material level:3m,5m,7m,10m,15m Universal Ultrasonic level meter\sensor