When you set an alarm point, fix the warning probe in the tube body where corresponds to liquidometer board digit. When the liquid comes to this location, the magnetic part in the tube couples with the reed tube of warning probe, at this time it realizes controlling the water entering or flowing out the pump.
It can be set alarm up setpoint, low setpoint and LED display. The connecting electric power of alarm probe is 220VAC or 24VDC. The strong points of the products are: simple to install, convenient, can adjust alarming position at any time, needless to adjust any other part, easy to load and unload.
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