LIQUID LEVEL INDICATOR INSTRUCTIONS:

Place the indicator on the edge of the cup with the probes inside.  Pour the liquid into the cup until the audible tone begins.  You can carry on pouring, for example putting milk into  a cup of tea, and when the second probe is reached the tone will speed up.  The noise of the indicator will continue between the two probes.  Remove the indicator and wipe the probes after use - DO NOT IMMERSE IN WATER.