Touch free electronic cistern valve system, complete with an iron frame for wall hung toilet. Activated by a dual flush infrared sensor. Includes a piezoelectric override button and an integral overflow pipe (warning pipe) to prevent flooding. AISI316 stainless steel panelnish. Pre flush optional upon request. A 24 hours 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.