Historical information
The Liquid 2 Level Sensor is an aid for people with vision impairment to fill cups and glasses with 2 levels of liquid. The unit simply hangs over the side of a cup or glass with the probes on the inside. Ideal for making a cup of tea or coffee with milk. Simply pour in your hot water stopping when a pulsating tone is heard. Pour in milk stopping when a continuous tone is heard. Your cup is now filled to approximately 15mm from the top and ready to drink. Can also be used as a single level sensor such as for non-mixed drinks. Handy magnets on the back of the unit allow for easy storage on fridge or other metal object.
Physical description
Yellow plastic round container with blue base and four yellow wires
