Shape: Square Contacts: NO+NC Rated voltage: 125V-250V Rated current: 4A-8A Max Current：16A Rated watt：500W（Higher than five hundred watt installation contactors） Working temperature: 0℃-50℃ Protection grade：IP68 Mechanical endurance:100,000times Electrical endurance:50,000times Cable length: 1.9m / 74" Environment: pool, oil, weak acid and weak base in water or oil tank,etc. Control level difference of less than 40cm not fit.Brand new