Feature: 1. FREQUENCY RANGE: RF modulator has a wide frequency range of 471.25‑885.25 MHz and is available in both formats. 2. ADJUSTABLE: UHF modulator cost effective for your own local cable TV system and can be designed with adjustable sound output levels and optional output channels. 3. FREQUENCY: Modulator can select the transmit frequency and the corresponding frequency display, and mix and interfere in the built in memory. 4. COMPATIBLE: TV link modulator IR extender is used for RF output of SLX and TV Link, compatible with set top boxes and other A/V sources. 5. PCB CIRCUIT: TV link modulator adopts broadcast standard PCB circuit design to further enhance the stability and better picture quality. Specification: Item Type: TV Link Modulator Material: ABS Modulator Parameters: Frequency Range: 471.25‑855.25MHz TV Standard: PAL/NTSC Channel Range: UHF 21‑69Ch Output Level: 85±5dBuV Sound System: M=4.5MHz, B/G=5.5MHz, I=6.0MHz, D/K=6.5MHz A/V Connector: RCA Female Thread RF Output Impedance: 75Ω Video Input Impedance: 75Ω RF Input: Female RF Output (DC Output): Female Thread (DC Output: 9VDC/100m) Power Consumption: ≤ 500mW Infrared Parameters: Input Signal Frequency: 37.9KHz Carrier (Infrared System) Output Signal Frequency: On Off Keyed 7.2 MHz Carrier Input Connector: IEC Female Output Connector: IEC Male with Cable(18cm) Remote Control Distance: ≥5m. Package List: 1 x Modulator1 x USB Power Cable1 x Signal Cable1 x Infrared Return Assembly2 x Double Sided Sticker