Specification: Item Type: Modulator Material: Plastic Model: HDM66 TV Standard Format: PAL/NTSC Standard: PAL/NTSC Frequency Range: PAL: 55.25/62.25MHZ NTSC: 61.25/67.25MHZ Sound system:B=5.5MHz?M=4.5MHZ INPUT Resolution:1080P/1080i/720P/576P/576i/480p OUTPUT: PAL or NTSC HDMI Version: HDMI1.3 HDCP Version: HDCP 1.3 Power Consumption:5Volt DC, 500mA(min) Operating Temperature:0C~+40°C How to Use: Step 1:Connect 5V 1A with USB output power adapter Step 2: Select PAL or NTSC TV system according to local TV requirements Channel switch setting CH3 or CH4 Step 3: connect RF IN and RF OUT Step 4: Turn on the HDMl device power, connect the HDMl input signal Step 5: Turn on the TV to CH3 or CH4 Please strictly follow the above steps! Package List: 1 x Modulator 1 x Power Cord 1 x Peration Manual