The TSC-450 control is equipped with advanced technology to link with the new mySteamist application for your iPhone or Android mobile device. Once you download mySteamist from iTunes or Google Play, you'll be able to activate pre-programmed user profiles within your home network range. Steamist gives you mobile flexibility at no additional cost. Steamist® Digital Control, Polished Chrome, 4.5 in H x 4.5 in W x 0.4 in D