This is to introduce the company, Infrared System Co. Ltd. Which is a leading manufacturer of Digital Video Recorder and CCTV related products, such as cameras, event/time lapse recorder, quad splitter and etc in Korea. You may not recognize our company name, as we have focused more on domestic market, but I think it will become familiar quickly. With the accumulated technology and know-how from manufacturing CCTV related products for many years, I am positive that you will be more than satisfied with the quality and price of the products. I will highly appreciate if you could visit our website and let me know of the model number of your specific interest.