Usage Tips:LONG MEASURING DISTANCE: 10cm to 4m(4 to 157 inches) from the sensor, which is suitable for different tanks.POWER ADAPTER: Input: 100-240V AC Output: 5V DC.WIFI SIGNAL:The sensor needs to connect to router to get 2.4G wifi signal.Wifi range is 30m when no obstacleSAFETY AND HIGH RELIABILITY:IP65 waterproof.REMOTE OIL TANK MONITORING: Check your tank level from your smartphone - anytime, anywhere! No need to open the tank from time to time.FULL AND LOW LEVEL ALERTS: You receive message alerts when it is full or low level. Or set the alarm level by appMULTI TANK MORNITORING:One app can monitor as many as 10 sensors.You can connect multi tanks easilyApplication:Water /Oil TankUsage:Home Automation SystemOperating Temperatures:-20℃-70℃Operation System:For Android,For lOS APP,Remote ControlAPP:Tuya Measuring Range:0.1m-4.0mPower Supply:100-240VAC to DC 5VMode:WIFI (2.4GHz) Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so onColor: OrangeMaterial: plasticPackage Contents:1 x Liquid Level MonitorOnly 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.