Water Level Indicator-Seven Level Indication and Water Overflow Controlled Buzzer : 40 MeterOverview :The Device offers a stylish look that is Capable of Displaying Seven Levels.Empty(All LED off),10%(1 LED on),30%(2 LED's on),50%(3 LED's on),70%(4 LED's on),90%(5 LED's on),100%(BUZZER activates) After the Successful Launch of its First Version we are here with a New "Water Level Indicator-Seven Level Indication and Water Overflow Controlled Buzzer" Comes with a Updated Stylish and most Rigid Device.And Sensor Cable having a new Corrosion Free Design.According to the Water Level of the Tank the Led Indicators will glow. Once the Water Level reaches the High Level loud Buzzer sound can be heard. Specification : Sensor Cable : 40 Meter(Including Height of the Tank) Max Water Height in the Tank : 42 Inches (For 1000 Liters Sintex) For Different Sensor Cable Length Products paste following product name in Amazon Search : 1.Water Level Indicator-Seven Level Indication and Water Overflow Controlled Buzzer : 10 Meter 2.Water Level Indicator-Seven Level Indication and Water Overflow Controlled Buzzer : 20 Meter3.Water Level Indicator-Seven Level Indication and Water Overflow Controlled Buzzer : 30 Meter For 10 Meter Indicator with Auto ON/OFF Controller for Motor(Pump) : Water Level Indicator Auto ON/OFF for MonoBlock/Submersible Motor(Pump):10 Meter For your own Customized Unit Please message us with Length of Sensor Cable & Maximum Water Height in Tank.