Making a drink has never been easier with our Liquid Level Indicator. It helps prevent hot water and other liquids from overflowing while making a drink. Place the device on the side of a cup and it will let you know when the liquid has reached the top through a series of audible beeps or vibrations. The indicator, yellow in colour, detects two different levels of liquid An intermittent beep and series of vibrations indicates when the cup is nearly full, faster beep and continuous vibration indicates when the liquid has reached its limit. Suitable for hot and cold drinks. Comes fitted with two small magnets which enables the indicator to be stored easily on a fridge for instant access. Please note: the magnet does attract other metallic objects except stainless steel. Designed with an easy to open battery drawer to make changing batteries simple. Fitted with a CR2032 lithium battery.