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 obstacle SAFETY 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 app MULTI TANK MORNITORING:One app can monitor as many as 10 sensors.You can connect multi tanks easily Application:Water /Oil Tank Usage:Home Automation System Operating Temperatures:-20℃-70℃ Operation System:For Android,For lOS APP,Remote Control APP:Tuya Measuring Range:0.1m-4.0m Power Supply:100-240VAC to DC 5V Mode:WIFI (2.4GHz) Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on Color: Orange Material: plastic Package Contents: 1 x Liquid Level Monitor 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.