Liquid Level Indicator

Fill your cup with greater confidence, using RNIB’s Audible Liquid Level Indicator ( ). Simply place it on the side of a cup and a series of audible beeps will let you know when the liquid nears the top. The Liquid Level Indicator gives off an intermittent beep when your cup is nearly full followed by a faster bleep when it has reached its limit. There are also magnets built in to allow easy storage on your fridge door.