HQ-Cam 8-Channel Passive Video Receiver & Power Server HUB * Transceiver Type: 8CH Passive Video Balun Receiver & Power Supply Hub (VPS) * Video: Frequency Response Range: DC-5MHz; Common-Mode / Differential-Mode rejection: 15KHz-5MHz 60dB type * Wire Type: 24-16AWG UTP CAT5 or higher; DC loop resistance ?18?/ 100m; Differential capacitance: 62pF/m (max) * One year manufacture Warranty , and lifetime Tech-Support (If you have any problem with this product, please click "contact seller " and send email to us, we will arrange our technician Support you)