Here is a smart kit that makes it easy to monitor video remotely. The Teradek Spark 4K Wireless Video Transmission System consists of a transmitter and receiver. It can transmit video signals up to 4kp30 (10-bit 4:2:2 color sampling). The transmitter and receiver are both compact. They have a range of 500 ft (line of sight).
Spark 4K uses 5GHz frequency and automatically finds a clear channel to save you time and effort. You can keep track of your signal status on the OLED display on each unit or on your smartphone or tablet.