This item is a water flow sensor to measure water flow with a measuring range of 0.3-6L/min. It can applied for water heater, coffee machine, imprinter, automatic water machine, and other flow metering equipment. The maximum temperature should not be exceeded 100 Celsius degree. Features - Color: White - Material: Plastic - Size: Approx. 3.5 * 3.5 * 2cm - Working range: 0.3-6L/min - Water pressure: <=0.8MPa - Working voltage: 5V-24V - Operating temperature range:-20~100 degree centigrade. - Operating humidity range: 35%~90%RH ( ). - Storage temperature: -25~+ 80 degree centigrade. - Insulation Resistance: &gt;100M&Omega; - for durable and use. - Applied for water heater, coffee machine, imprinter, automatic water machine, and other flow metering equipment. - Suitable for silicone with 5-7mm diameter. - The maximum temperature should not be exceeded 100 Celsius degree. Package list: 1 flow sensor