Hollyland Syscom 421 Wireless Video and Audio Transmission System

Key Features
  • 1080p60 Transmitter/Receiver 548m Range
  • Multi-Cam Transmitter and Control System
  • 4 x Transmitters to 1 x Receiver
  • Transmits LAN/RS-422/RS-485 Control
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RRP:  $12,150.00 
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The Hollyland Syscom 421 Wireless Video & Audio Transmission System is a multi-cam wireless video transmission system that communicates with up to four cameras using a single receiver with PTZ control as well as a tally. Supporting up to 1080p60 video signals via SDI and HDMI, the transmitter/receiver system offers a 548m line of sight transmission range with 0.07-second latency.

The receiver features 4 x SDI/HDMI outputs (one for each transmitter) for connecting to a monitor or switcher. You can also connect the receiver to a LAN, allowing you to pass control signals from a control panel to the transmitters. This enables you to control PTZ cameras as well as send tally information. The transmitters have a dedicated tally output port. Both units also have an OLED display that confirms the resolution, transmission channel, signal strength, and other details such as battery power. The transmitters each have a built-in L-series battery plate, and the receiver has a V-mount battery plate. Both Transmitter and receiver feature a 2-pin power input for extended run times.


Key Features

  • Up to 1080p60 transmitter/receiver system
  • 548m line-of-sight transmission
  • SDI and HDMI input
  • SDI and HDMI output
  • Passes control and tally
  • OLED display


Wireless Range1800' / 548.64 m (Line-of-Sight)
Channel Bandwidth40 MHz
Frequency RangeAU
Latency< 0.07 sec
RF Power≤ 22 dBm
RF Sensitivity-90 dBm
Transmitter Antenna Ports4 x RP-SMA Male
Receiver Antenna Ports4 x RP-SMA Male
Transmitter Video Connectors1 x BNC (3G-SDI / HD-SDI) Input
1 x HDMI Input
Receiver Video Connectors4 x BNC (3G-SDI) Output
4 x HDMI Output
Transmitter Other I/O1 x USB Type-C
1 x RJ45 10/100/1000 Ethernet, RS-422, RS-485
1 x 3.5 mm Tally Output
Receiver Other I/O1 x USB Type-C
1 x RJ45 10/100/1000 Ethernet, RS-422, RS-485
HDCP SupportNone
Embedded AudioSDI
Format Support
Broadcast System CompatibilityNTSC, PAL
Video FormatSDI/BNC:
1080p at 23.98, 24, 25, 30, 50, 60 fps
1080i at 50, 60 fps
720p at 50, 60 fps
1080p at 24, 25, 30, 50, 60 fps
1080i at 50, 60 fps
720p at 50, 60 fps
576p at 50 fps
480p at 60 fps
Transmitter Panel TypeOLED
Receiver Panel TypeOLED
Transmitter Built-In BatteryNone
Receiver Built-In BatteryNone
Transmitter Battery Support1 x Sony L-Series / NP-F Type
Receiver Battery Support1 x V-Mount
Transmitter Power Connector1 x 2-Pin LEMO (7 to 36 VDC) Input
Receiver Power Connector1 x 2-Pin LEMO (18 to 36 VDC) Input
Transmitter Power ConsumptionDevice: (12 W)
Receiver Power ConsumptionDevice: (32 W)
Transmitter Mounting1 x 1/4"-20 Female
Receiver Mounting1 x 1/4"-20 Female
Memory Card SlotNot Specified by Manufacturer
Transmitter Dimensions5.67 x 3.46 x 1.18" / 144 x 88 x 30 mm (Excluding Antenna and Battery Plate)
Receiver Dimensions9.53 x 5.83 x 2.44" / 242 x 148 x 62 mm (Excluding Antenna and Battery Plate)
Transmitter Weight0.9 lb / 431.5 g (Excluding Antenna)
Receiver Weight3.6 lb / 1621 g (Excluding Antenna)

What's In The Box

  • 4 x Transmitter
  • Receiver
  • 25 x 5 GHz Antenna
  • 4 x 7" Magic Arm
  • OTG Cable
  • 4 x DC Conversion Cable
  • 5 x RS485/RS422 Interface Cable
  • Power Adapter
  • Limited 1-Year Warranty

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