Feature 1Efficient Way: AV selection modulator is a cost effective way for your own local cable system. 2PAL NTSC Standard: The TV modulator's TV standard is PAL NTSC and the output channels are selectable. 3Adjustable Levels: The AV optional modulator has adjustable output levels, adjustable sound and video output levels. 4Multiple AV Input Sources: The AV selection modulator allows you to select multiple AV input sources. 5Lightweight Design: AV selection modulator adopts humanized design, small and lightweight, easy to carry.Item Type:AVSelectionModulatorMaterial: Metal, PlasticTV Standard: PAL NTSC Channel Range: VHF UHFOperating Frequency: 47MHz ~ 868MHzAV Connector: RCA FemaleRF Input RF Output: F FemaleOutput Level: 855dBuVSound System: M = 4.5MHz, B G = 5.5MHz, I = 6.0MHz, D K = 6.5MHz (Same A B C Settings)Plug Voltage: AC 100-240V .wang-edit-text{ font-family:'Arial' important; } .wang-edit-text table { border-top: 1px solid 000; border-left: 1px solid 000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000; border-right: 1px solid 000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 xAVSelectionModulator1 x Instruction Manual