This carbon monoxide alarm from Fireangel has a compact design that will look good in your home. The internal battery will power the product for its complete 6 year product life, so there is no need to replace the batteries. The alarm is simple to mount and install in your home and is also portable to be taken on holiday. It has a large easy press test and reset button which makes weekly testing of the alarm simple and easy. Other features include a triple LED display providing peace of mind that provides 'at a glance' confirmation that the alarm is in full working order.