Espire Input Relay Base Powered by Mains Supply with Backup Battery. We take great pride in maintaining exceptional standards in our products. We are committed to harnessing the very latest technologies, & developing superior-performing products which allow installation projects to be completed quickly & easily. Supported by the esteemed Scolmore Group, a renowned leader in electrical & lighting solutions, Espire combines innovation, reliability, & the backing of a trusted industry partner.