System type: 10-year sealed battery + built-in RadioLINK+ wireless interconnection.

Aico Ei208WRF RadioLINK+ Battery Carbon Monoxide Alarm

Wireless battery-powered CO alarm with built-in RadioLINK+ for interconnection with compatible Aico alarms.

• Proven electrochemical CO sensor

• Sealed 10-year lithium battery

• Built-in RadioLINK+ wireless interconnection

• AudioLINK+ data extraction

• 10-year product life

Manufacturer information: https://www.aico.co.uk/product/ei208wrf-radiolink-battery-co-alarm/