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. Item Type: TV Link Modulator Material: Plastic TV Standard Format: PAL /NTSC Channel Range: PAL: 471.25~865MHz（21~69ch） NTSC: 471.25~885MHz(14~83ch) Output Level: 85±5dBuV Accompaniment System: M=4.5MHz, B/G=5.5MHz, I=6.0MHz, D/K=6.5MHz A/V Connection: RCA Female RF Input: F female RF Output: F female RF Output Impedance: 75 Ω (Unbalanced) Video Input Impedance: 75 Ω Default Factory Setting: Channel 21(471.25MHz), PAL Energy: USB DC 5V Power Consumption: <1W Operating Temperature: 0℃ ~ +40℃ 1 x TV Link Modulator 1 x Transmission Cable 1 x English Manual