The Magiplug Sink Plug is a useful safety device that helps to prevent the risk of scalds and overflows.It has an innovative pressure release mechanism that allows the user to set the water level to a pre-determined depth. Any water above that chosen level is allowed to escape, so the plug will prevent flooding and subsequent damage to the property if, for example, the taps are left unattended. The plug also incorporates a heat sensitive pad that will change colour when the temperature reaches 36 degrees Celsius. This provides a useful visual warning about the possibility of overheating.