Suitable for wall mounting or free-standing and fitted with a 10 year sealed long life lithium battery, this Kidde 10LLCO twin pack is the ideal carbon monoxide alarm set to install at home or to take with you on holiday. Without the need to change batteries, the Kidde 10LLCO is a cost effective alarm featuring LED status indicators, test/hush button facility and is supplied with a 10 year manufacturer's warranty for peace of mind.