Specification parameters: Product name: water level sensor Working voltage: dc3-5v Operating current: less than 20mA Sensor type: analog Detection area: 40mm x 16mm Production process: FR4 double - sided spray tin Operating temperature: 10ºC-30ºC Working humidity: 10%-90% no condensation Product weight: 3.5g Product size: 62mm x 20mm x 8mm