Kidde i90 uk c smoke alarms with hush test kidde i9060 uk c this smoke alarm from kidde has been manufactured with an ionisation sensor to detect fast flaming fires that can burn combustible materials quickly and without warning there are also many other features including the hush button allowing you to quickly silence nuisance alarms while the test button and led allows simple verification of battery and alarm operation kidde i9060 uk c smoke alarm living areas hush test