Adjustable: Professional UHF modulator can be designed with adjustable sound or video output levels and optional output channels. Frequency Range: RF modulator has a wide frequency range of 471.25 MHz to 885.25 MHz and is available in both formats. Memory: Modulator can select the transmit frequency and the corresponding frequency display, and mix and interfere in the built in memory. Compatible: Professional UHF modulator is used for RF output of SLX and TV Link, compatible with set top boxes and other A V sources. Application: Modulator is suitable for hotels, supermarkets, sports cafes, bars, restaurants and many other places. Item Type: TV Link Modulator Material: ABS Frequency Range: 471.25MHz-885.25MHz 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: F Female RF Output (DC Output): F Female Thread (DC Output: 9VDC/100m / 109.4yd ) Default Factory Setting: Channel 21(471.25MHz), PAL-B/G /38KHz Power Consumption: ≤1W Color: Black Package Contents: 1*TV Link Modulator 1*Signal Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.