In recent years infra-red control has largely been replaced by the more flexible technology of wireless radio, which is not limited by the need for line-of-sight to operate. However infra-red control is still utilised by many home cinema installers and home owners wishing to integrate the blind control with other infra-red audiovisual equiptment. Universal remotes such as the Philips Pronto controller can enable for instance blackout blinds to be lowered and lights dimmed automatically whenever a DVD movie is set to play.