... Low cost: cheap material2.long life:>1000000 times3.working temp:-20~+1254.Certificates: CE, RoHS,FDAMovement Explaination ... cut off the circuit, this will send the control board a signal that the liquid level is ... , air-cooler, BSD-P, humidifier, dehumidifier,fluid control,a pump,an indicator,an alarm,or other device. ... other products We look forward to working with you as partners !! Water Level Switch