This cutting-edge video transmission product boasts several standout features.

Firstly, it operates within the 4.5GHz frequency band, offering extensive coverage and perfect support for high-quality video capture and transmission "covers a wide range of scenarios with broad coverage," whether for professional photography or real-time monitoring needs, ensuring you can easily capture key moments anywhere, allowing you to capture every important scene at any time.

Secondly, it boasts the highest 4K resolution, capturing every detail with crystal clarity, significantly enhancing video quality "supports 4K quality, capturing more details" and delivering a clear picture during playback, ensuring you experience the ultimate visual experience.

The product also features high stability and low latency, minimizing signal interference and ensuring smooth transmission "stable performance, no lag," making it an ideal choice for professional users seeking the best viewing experience. It allows you to miss nothing crucial, providing uninterrupted enjoyment of every exciting moment.

With a maximum transmission distance of up to 3 kilometers, this device is perfect for long-distance use, greatly improving your work efficiency "easily connect remote devices" without requiring additional complex equipment, ensuring high-quality video transmission even over long distances.

Its multi-device compatibility is also impressive, supporting various output ports and devices with ease "compatible with multiple devices, flexible to connect" allowing you to seamlessly integrate it into whatever setup you’re using, meeting diverse operational needs.

Finally, its compact design combined with durability ensures portability in any environment "solid build, easy to carry around," whether you're working indoors or outdoors, it provides reliable performance and stability for every task.

It seems like this is a highly practical video transmitter. If you could add more information about its specific use cases or target user groups, I could refine the product description further to better match real-world scenarios. Would you like me to try that?

VRX 4.5G User Manual

IV. Key control and LED indicators definition:

1. Key ④ is the frequency channel & band selection key.
Press key ④ for a short period of time will switch to the next frequency channel. Depends on the frequency plan or band we are using, the corresponding red LED ③ (band A)or blue LED ② (band B) will flash 1, 2,3,4,5,6,7or 8 times for channel no.indication.

Press key ④ for a period longer than 3S will switch to another channel frequency plan or band. For example, if now we are in
channel no. 3 of band A, the red LED ③ will flash 3 times. If we press key ④ for more than 3S and release, the red LED ③
will be turned off and blue LED ② will flash 3 times which means we are now in channel no. 3 of band B.

Frequency channel or band selections cyclic. Please refer to the following table for details:

2. Key ⑤ is the DC Power ON/OFF control key. When DC power is applied to DC jack, the green LED ① will be turned
on. Press Key ⑤ for more than 2 seconds, the DC power and all LEDs will be turned off. Press Key ⑤ again for more than 2
seconds, the DC power will be turned on, and corresponding channel indicator will flash according to the channel no.

V .Table of Corresponding Channel Frequency Parameters

Channel Frequency Table (in MHz）

VTX4.5G User Manual

IV. Key control and LED indicators definition:

1. Key ④ is the frequency channel & band selection key.

Press key ④ for a short period of time will switch to the next frequency channel. Depends on the frequency plan or band we
are using, the corresponding red LED ① (band A) or blue LED ② (band B) will flash 1, 2,3,4,5,6,7 or 8 times for channel no. indication.
Press key ④ for a period longer than 3S will switch to another channel frequency plan or band. For example, if now we are in channel no. 3 of band A, the red LED ① will flash 3 times. If we press key ④ for more than 3S and release, the red LED ① will be turned off and blue LED ② will flash 3 times which means we are now in channel no. 3 of band B.
Frequency channel or band selection is cyclic. Please refer to the following table for details:

2. Key ©) is the Tx power ON/OFF control key. Press it for a short period of time to turn the output power ON or OFF. If the
key is pressed and held for 3 seconds, the module will enter pit mode and all the LEDs will be turned on simultaneously. See the following table for details:

Power selection:
@ Default power 25 mW,
@ When the power start switch indicator light is green, the power is 2500 milliwatts

1. Short press key ⑤ to toggle the output power ON/OFF.
2. Long press the key to enter Pit mode.

V. Table of Corresponding Channel Frequency Parameters:

Channel Frequency Table (in MHz)