K117 Liquid Level Indicator – 1 Sensor

The 9 Volt Single Liquid Level Indicator is an aid to fill cups and glasses with one level of liquid. The sensor hangs over the side of a cup or glass with the metal prongs on the inside of the container. It produces a loud buzzing tone with a vibration. A standard 9 Volt battery plugs into the base for easy battery change. 9 volt battery supplied. PLEASE NOTE: Due to hygiene and safety reasons this product cannot be returned unless faulty.