The VH200 system is a reliable, economical, and chemical-free way to safeguard drinking water in any residential application, with flow rates up to 9 GPM (34 lpm). The High UV output lamp technology allows for a smaller footprint while providing the same UV performance as a longer chamber. An audible lamp replacement reminder and countdown timer with digital display. A controller will also go into alarm if the lamp fails. The constant current feature ensures stable UV lamp output, regardless of power fluctuations. The UV Lamp is rigorously tested to provide consistent output over the entire lamp life (9000 hours). Perfect for a wide range of whole-home, point-of-entry water treatment solutions in homes, cottages, or OEM applications.