The Hollyland 421S is a wireless audio and video transmission system that can reach up to 1800 feet. It features four transmitters on the same channel for enhanced anti-interference. The device can transmit video up to 1800 feet in a synchronous mode. It features a latency of 0.07 seconds. It supports various features such as streaming video in full HD using the HDMI and SDI connections. The supply power range of this device is 7 to 36 volts DC and 12 to 24 volts AC. It outputs video in formats such as 480P60, 576P50, 720P50, 1080i, and 60Hz. 

4 TX Synchronized A and V Transmission 

Up to 1800ft range 

0.07S Latency 

Tally Control 

RTSP Streaming 

The 421S interface features a 3.5mm jack for input of the HDMI type A and a female SDI. It also has 4 antenna types RP-SMA, DC, USB, LAN, and RS485/422. The 421S uses a 5GHz frequency and has a power MAX 22dBm output. It also has a receiver sensitity of -90dBm, which provides the lowest transmission latency. The 421S is capable of delivering 4 TX over the air transmission with a distance range of up to 1800 feet and a latency of around 0.07 seconds.

Limited 2-Year Manufacturer Warranty