1. Overview:Tool Point Water tank Overflow Alarm is a small device which is easy to install in any kinds of water tank. Water tank Overflow Alarm is made up of ABS plastic and is white in color. The dimension of product is 12 X 10.5 X 3.5. It's work on 2 AA battery. 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. It has an on/off button at the sides. 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. Once you insert the battery into the alarm, 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. Warranty Details: No warranty against the damaged product, Only manufacturing defects shall be entertain within 3 months from the date of purchase. Warranty is applicable on device only.