Usage Tips:Easy Installation: Designed for easy installation and seamless integration, this advanced digital water flow meter enhances your water purification system. Maintains Water Purifier Efficiency: It helps track usage time and signals when it's time to change the filter, thanks to its programmable flow alarm, which reminds you with an audible prompt, making maintenance proactive and simple. Smart Powe Saving: Equipped with a smart power saving feature, this water flow meter automatically shuts off when not in use to save energy. Accurate Measurement: Capable of measuring a wide range of flow rates from 0.8 to 8.0 liters per minute (LPM) and 0.2 to 2.1 gallons per minute (GPM), this device offers precision and versatility in monitoring water usage. Water Flow Meter Is Compact And Durable: Its rugged design ensures long-lasting reliability and performance, improving the overall efficiency of your water filtration system. Joint Pipe Bore Size:1/4inch Coupling Type:join Measurement Range:0-99999 Liters/Gallons Model Number:Flow Monitor DIY Supplies:Plumbing Accuracy:±10% Battery:2 x 1.5V Batteries(not included) Colour:White Material:ABS Size:9x6.6x6.3cm Package Contents: 1 x Flow detector 1 x English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.