Note: Usually, This UV system is suitable for use with water purifiers and filters. If there are other usage scenarios, please confirm whether the flow rate is appropriate. Not recommended for use outside the flow rate range of the system. EU220V-240V / US110V-120V 11W 1GPM unit, 250*45mm stainless steel chamber, G1/4 (DN8) inlet/outlet. SMART & ECONOMICAL - Smart flow sensor switch turns the UV water filter under sink on and off automatically with water flow, saving power and lengthening the life of the UV lamp. EFFECTIVE - Built-in Philips Efficient sterilization UV Lamp(253.7nm), sterilizing 99.99% of bacteria and viruses, producing pure water for your entire family.The UV water purifier for sink is a suitable solution to filter well water and other problem water sources like water from lakes and streams. COMPATIBLE & EASY INSTALLATION - Complete add-on Kit, this ultraviolet light is compatible with most reverse osmosis (RO) water filtration systems as a final stage of protection. If having a tank, install this UV filtration system after the storage tank where water flow is high enough. NO CHLORINE, Chemical Free and Environmentally Friendly. No change at taste, color, odor, PH. Utilize ultraviolet rays to fight against water-borne pathogens, and at the same time, no substances are added to the water except ultraviolet rays, and there is no secondary pollution. LONG LASTING - The lamp of the inline UV filtration systemlasts 8,000 hours; Flow rate: 1.0 GPM. Fit under sink and reverse osmosis RO water filter.