Nice compact unit
I use this for filling large water containers.  I added to the terminals to get extra length, also had to make a cover for the terminals so they would not touch and continually run.  The tone is pleasant, though on the quite side.  Batteries are not a standard size battery, AA OR AAA.  So far I am getting a good amount of use out of the batteries that come with this unit.  This unit, after I altered it, is doing what its meant to do and would recommend this to anyone needing a warning unit as this for even simple things as filling a glass of water.
Rating: 3 stars