Npower hands free £100 gadget to 'safety conscious' home owners

Telegraph.co.ukNpower hands free £100 gadget to 'safety conscious' home ownersTelegraph.co.ukNpower hands free £100 gadget to 'safety conscious' home owners. But to get the hi-tech carbon monoxide alarm, families must pay more for their energy. Npower bills. Npower's gas detection gadget and safety check will appeal to young families worried ...