... cost: cheap material 2.long life:>1000000 times 3.working temp:-20~+125 4.Certificates: CE, RoHS,FDA Level Switch ... 1.Low cost: cheap material2.long life:>1000000 times3.working temp:-20~+1254.Certificates: CE, RoHS,FDAMovement Explaination:A float ... switch, to prevent overflow or to prevent dry-fire. Application:water heater, water dispenser, air-condition, air-cooler, BSD-P, humidifier, dehumidifier ...