Water Tank Overflow Alarm Is A Small Device Which Is Easy To Install In Any Kinds Of Water Tank. Material And Finish Water Tank Overflow Alarm Is Made Up Of Virgin Plastic And Its White In Color. The Dimension Is 14X12X4 cm. The Innovative Water Tank Overflow Alarm Works On 230 Ac. A Wire Has To Be Kept At The Desired Level In The Tank. The Alarm Rings And Alerts You When The Water Reaches The Set Level In The Tank. Additional Features The Efficient Water Tank Overflow Alarm Saves Water And Electricity. It Also Prevents Your Walls And Roofs From The Damage That Is Caused Due To Water Overflow. You Can Fix It Near The Motor Or Anywhere You Need As Per Your Convenience. The End Of The Wire Has A Sensor That Should Be Hanged In The Water Tank Below The Overflow Pipe. The Water Should Touch The Sensor When It Fills Up To The Required Level To Alarm You. Small And Easy To Install