Analog TV signal transmitter/wireless signal converter; Resurrects old-fashioned again; Small, portable, and HD; It supports multiple devices to receive, meeting your different needs. Universal type for color and black and white televisions; Multiple input methods: Supports set-top boxes, network set-top boxes, computers and mobile phones; With an OLED screen and an -compatible interface; Supports 9V power supplies Powerful performance with low energy consumption; Industrial-grade motherboard; 360-degree coverage without dead ends; High-performance processing chips; The transmission distance is 10-20m/32.8-65.6ft; Supports HD input. The HD input can be converted to N and P systems. AV input is supported, but it cannot be converted to N system.It supports high-definition input, converts it to AV signal output and then connects to other AV-enabled displays, such as LCD . At the same time, it can also send signals out.Supports accompanying sound setting in the range of 4.5MHz-6.5MHz. It is an analog TV signal transmitter and a wireless signal converter. It supports N-system , with accompanying sound 4.5-6.5 conversion, and supports HD to AV output and simultaneous transmission. The transmitting frequency is adjustable. It supports FM radio to receive TV accompanying sound. Suitable for color and black and white . Benefits of high-definition to AV output: When you input high-definition signals, the high-definition of your set-top box is occupied by the transmitter, and the previous LCD TV cannot be used.At this time,the LCD TV can be connected to the video terminal of the transmitter, which can realize simultaneous work of LCD TV and transmitter. and hold the menu button to enter the settings:UHF/VHF, P, transmitting frequency setting and accompanying sound frequency setting.With an OLED display. FM Transmitter: Simple FM signal transmission and the transmission effect is not bad. Here's how: set the frequency to 85.25MHz in the VHF band and change the frequency of the accompanying sound. 85.25MHz plus the accompanying sound frequency is equal to the radio's reception frequency. 85.25MHZ+6.5MHZ=91.75MHZ 85.25MHZ+6.0MHZ=91.25MHZ 85.25MHZ+5.5MHZ=90.75MHZ 85.25MHZ+4.5MHZ=89.75MHZ Transmission distance: Even if the transmitter is used within 20m/65.6ft between two walls, you can still watch old color and black and white in a clear way. 9V DC power supply: There is a phenomenon of heating, but this is a normal phenomenon. To do it without heating, you can use a 5V power supply, but many 5V USB power supplies have a lot of ripple, which cause image interference. The white cover plate on the product is made of aluminum alloy, which is used for heat dissipation and not cause the product to get hot. Due to different product batches, the appearance , which does not affect the use Colour:As Shown Material:ABS+PC Package Contents: 1 x Transmitter 1 x Transmitting antenna 1 x USB power cable (5V input voltage) 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.