Shenzhen Handar Optical Technology Co.,Ltd is a hi-tech enterprise for fiber optical communication and CCTV (security monitoring) and has established for many years, so owns a lot of experience for fiber optical area, meanwhile, owns a professional and excellent team to serve our all customers.     HD has been focused on research and production in factory fiber optical communication and CCTV devices which include media converter, video converter(CCTV), SFP module EPON and Patch cord. Our media converter distance has 2km-120km, and with double fiber optical port or Bi-Di or single port or 4 fiber optical port and has SNMP Managed…About our video converter has been specialize in security monitoring(CCTV), the distance is 2km to up 120km with high definition at all, so will bring you convenient and wonderful solutions for CCTV...