Touch free electronic cistern valve system complete with an iron frame for wall hung toilet. Activated by a dual flush infrared sensor. Powered by battery or transformer. Includes a piezoelectric override button and an integral overflow pipe (warning pipe) to prevent flooding. AISI316 stainless steel panel. Pre flush option upon request. A 24 hour hygiene flush is included. The following settings can be changed by using the Stern remote control: Sensor Range, Security Time, Delay In, Delay Out and On-Off.