Instructions for use: 1. Insert the TV cable (input the closed path of analog TV signal); 2. Connect the TV HDMI cable to the receiver's HDMI interface and the other end to the TV's HDMI in interface; 3. Turn on the TV, use the signal switching function on the TV remote control to select the HDMI signal input mode; 4. After the receiver's power is connected, use the supplied remote control to start the machine. Press the MENU button in the middle of the receiver's remote control -- right move button -- -preset button -- press the down move button -- automatic preset search -- and then click right to start the search. (P+- is up and down, V+- is left and right and is the confirmation button) Features: 1. Easy to use, convenient, clear display, volume and channel management in the selection window. 2. The receiving signal is stable and reliable, and can receive and store 251 TV channels, which can meet the needs of the cable TV network in the future. 3. Wide voltage range (110-240V) switching power supply is used, high efficiency, low heating, safe and reliable. 4. Equipped with remote control power off, regular power off and 10 minutes no signal automatic power off function. 5. Suitable for all TVs with HDMI input. Suitable for projectors, multimedia teaching, network technology, etc. Specifications: Material: ABS Standard: USS, VDE (optional) Voltage range: AC 110V - 240V Power consumption: