Feature:1. Efficient Way: AV selection modulator is a cost effective way for your own local cable system.2. PAL NTSC Standard: The TV modulator's TV standard is PAL NTSC and the output channels are selectable.3. Adjustable Levels: The AV optional modulator has adjustable output levels, adjustable sound and video output levels.4. Multiple AV Input Sources: The AV selection modulator allows you to select multiple AV input sources.5. Lightweight Design: AV selection modulator adopts humanized design, small and lightweight, easy to carry.Specification:Item Type: AV Selection ModulatorMaterial: Metal, PlasticTV Standard: PAL NTSC Channel Range: VHF UHFOperating Frequency: 47MHz ~ 868MHzAV Connector: RCA FemaleOutput Level: 855dBuVSound System: M = 4.5MHz, B G = 5.5MHz, I = 6.0MHz, D K = 6.5MHz (Same A B C Settings).Package List:1 x AV Selection Modulator1 x Instruction Manual