From Manufacturer
Transmit lossless HD video up to 500' to monitor video wirelessly using the Spark 4K Transmitter from Teradek. The Spark 4K transmitter can input up to 4K30 10-bit 4:2:2 HDR video via HDMI and transmit visually lossless video to up to two Spark 4K receivers with zero delay. The transmitter unit provides a powerful signal that can travel up to 500' line of sight and features a bright OLED display to view the unit status.
The Spark 4K transmitter features internal antennas, which makes it ultra portable, and it allows you to extend video to a display without any cabling. Built-in AES-128 encryption protects your video from prying eyes, while noise rejection keeps your video clean no matter how many devices are using the 5 GHz wireless spectrum.
The Teradek Launchpad app for iOS or Android that easily connects to the transmitter via Bluetooth, which provides channel-selection tools, monitoring, and remote configuration. There are 1/4"-20 and M3 mounting threads to mount your transmitter on a variety of cameras, cages, or rigs. It's powered using a separately available USB Type-C power source.