This product will be dispatched by one of our trusted suppliers. You’ll be contacted by their selected courier about your delivery. Know more, worry less. The new Nest Protect looks for fast burning fires, slow, smouldering fires & invisible carbon monoxide. It speaks up to tell you what the problem is & where it is. It can also give you a friendly Heads Up before it has to sound the alarm & you can hush it with your phone. In case you’re not home, Nest Protect alerts your phone when the alarm goes off or the batteries run low. It also gives you peace of mind by testing itself over 400 times a day & showing you everything’s working with a quick green glow when you turn off the lights. & it looks after your family for up to 10 years. Product Dimensions: H 13.5 x W 13.5 x L 3.85 cm