... Apply to all kinds of medium 4CE.UL.RoHS Universal ultrasonic level meter for distance measurement Ultrasonic levelmeter working principle: the ... Provide MODBUS7. Relay output:Floor\Highest alarm and control (material level/liquid level)8. Temperature range: -40°C~ +75°C9. ... surface13.Stroke : Liquid level:4m,6m,8m,12m,15m,20m,30m Material level:3m,5m,7m,10m,15m Universal Ultrasonic level meter\sensor