These easy to use devices are simply hung on the rim of the cup. Pour the liquid, and when the level is approximately 25mm from the top, the device will emit a buzz and vibrate, alerting you to stop pouring. 

* This item is approved by the DVA and may be available free of charge under the program. To check your eligibility please download a copy of the DVA Catalogue by clicking here: https://www.rsb.org.au/rsb-and-dva or contact the RSB on 1300 944 306.