Kidde Battery Carbon Monoxide Alarm is ultra long-lasting - guaranteed for 10 years of continuous protection. The alarm features two LEDs, red for CO presence accompanied by the alarm sounding, and green to confirm power. Kidde Battery Carbon Monoxide Alarm can be fixed to the wall, or simply placed on a shelf or table top - its portable design meaning it is ideal to be taken on holiday and for boats, caravans, and motor homes.