Analog TV signal transmitter or wireless RF 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 or 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. 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. 85.25MHZand6.5MHZ=91.75MHZ 85.25MHZand6.0MHZ=91.25MHZ 85.25MHZand5.5MHZ=90.75MHZ 85.25MHZand4.5MHZ=89.75MHZ Colour:White Material:Aluminum Plywood Package Contents: 1 x Transmitter 1 x Antenna 1 Cord (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.