OT-1-3 Video Distribution Amplifier Video: 1 channel Video input, 3-channel Video output, high stable capability and reliability. Advantages : 1.Within the available transmission distance over coaxial cable, it can achieve high quality video effect and own the ability to enhance the figure and high frequency and boost definition and resolution 2.Available transmission distance RG59 Coaxial Cable, about 1000m RG6 Coaxial Cable, about 2000m RG11 Coaxial Cable, about 3000m Our products are strictly abide by ISO9001 and are 'CE, UL, FCC, MA, and ROHS' certified.