Feature:1. [PERFECT FIT] UHF modulator, PAL/NTSC optional, applicable for your own local CATV system.2. [BROAD COMPATIBILITY] TV link modulator compatible with set top box and other A/V sources, more reliable to use.3. [PRACTICAL] The AV to RF converter designed with adjustable output level, and optional output channel.4. [SIMPLE DESIGN] The RF TV micro modulator has simple appearance design, exquisite workmanship, making you fondle admiringly.5. [PREMIUM MATERIAL] The RF modulator adopts high quality plastic material, sturdy and durable, and you can use for a long time.Specification:Item Type: TV Link ModulatorMaterial: PlasticTV Standard Format: PAL /NTSCChannel Range: PAL: 471.25~865MHz21~69ch NTSC: 471.25~885MHz(14~83ch)Output Level: 855dBuVAccompaniment System: M=4.5MHz, B/G=5.5MHz, I=6.0MHz, D/K=6.5MHzA/V Connection: RCA FemaleRF Input: F femaleRF Output: F femaleRF Output Impedance: 75 (Unbalanced)Video Input Impedance: 75 Default Factory Setting: Channel 21(471.25MHz), PALEnergy: USB DC 5VPower Consumption: <1WOperating Temperature: 0 ~ +40.Package List:1 x TV Link Modulator1 x Transmission Cable1 x English Manual