Hollyland SYCOM 421S 4-Transmitter 1800' A/V Transmission System
SKU: 438671262

Hollyland SYCOM 421S 4-Transmitter 1800' A/V Transmission System

Sale price$4157.55 Regular price$4619.50
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Hollyland SYCOM 421S 4-Transmitter 1800' A/V Transmission SystemThe Syscom 421S 4 Transmitter 1800' A V Transmission System with Carry Case from Hollyland 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 tally. Supporting up to 1080p60 video signals via SDI and HDMI, the transmitter receiver system offers an 1800' line of sight transmission range with 0. 07 second latency. The 421S system also supports Ethernet pass

The Syscom 421S 4-Transmitter 1800' A/V Transmission System with Carry Case from Hollyland 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 tally. Supporting up to 1080p60 video signals via SDI and HDMI, the transmitter/receiver system offers an 1800' line-of-sight transmission range with 0.07 second latency. The 421S system also supports Ethernet pass-through, so you can stream directly via RTSP to the Internet.

The receiver features four SDI and four HDMI outputs (one for each transmitter) for connecting to a monitor or switcher. You can control PTZ cameras via IP or RS-422/485 serial connections. The transmitters have a dedicated tally output port that support optional tally lights. Both units also have an OLED display that confirms the resolution, transmission channel, signal strength, and other details such as battery power. Each transmitter has an L-series battery plate, and the receiver has a V-mount battery plate. Both Transmitters and receiver also feature a 2-pin power input for alternate DC power options.

Features
  • Up to 1080p60 transmitter/receiver system
  • 1800' line-of-sight transmission
  • SDI and HDMI input
  • SDI and HDMI output
  • Passes control and tally over LAN
  • OLED display

Specifications

Inputs / Outputs
Antenna I/O Transmitter/Receiver: 4 x RP-SMA Female
Video I/O Transmitter: 1 x HDMI Input
Transmitter: 1 x BNC Input
Receiver: 4 x HDMI Output
Receiver: 4 x BNC Output
HDCP Support Not Specified by Manufacturer
Embedded Audio SDI
HDMI
Audio I/O None
Power Transmitter/Receiver: 1 x (Unspecified Type) 2-Pin (36 VDC) Input
Other I/O Transmitter: 1 x USB-C Input
Receiver: 1 x USB-A Input
Transmitter/Receiver: 1 x RJ45 (LAN) Input/Output
Transmitter/Receiver: 1 x Proprietary (RS-422/RS-485) Input/Output
Wireless
Wireless Range 1800' / 548.64 m (Line-of-Sight)
Channel Bandwidth 40 MHz
Frequency Range US: 5.1 to 5.9 GHz
Latency < 0.07 sec
RF Power ≤ 22 dBm
RF Sensitivity -90 dBm
Wi-Fi Yes
Bluetooth None
Format Support
Video Format HDMI
1080p: 60/50/30/25/24
1080i: 60/50
720p: 60/50
576p: 50
480p: 60
SDI
1080p: 60/50/30/25/24
1080i: 60/50
720p: 60/50
576p: 50
480p: 60
Audio Format Not Specified by Manufacturer
Timecode Support Yes
Power
DC Input Power 36 VDC
Battery Type Transmitter: 1 x L-Series
Receiver: 1 x V-Mount
Power Consumption Transmitter: 12 W
Receiver: 32 W
Mounting
Mounting 1 x 1/4"-20 Female
1 x 3/8"-16 Female
Environmental
IP Rating None
Environmental Protection None
General
Material of Construction Metal
Dimensions Transmitter: 5.7 x 3.5 x 1.2" / 144 x 88 x 30 mm
Receiver: 9.5 x 5.8 x 2.4" / 242 x 148 x 62 mm
Weight Transmitter: 15.2 oz / 431.5 g, Including Antenna, Battery Plate
Receiver: 3.6 lb / 1621 g, Including Antenna, Battery Plate
Packaging Info
Package Weight 23.95 lb
Box Dimensions (LxWxH) 21.5 x 18.25 x 9.25"
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 438671262

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.8 ★★★★★
Based on 1691 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
K
Verified Purchase
K Younger
Grantham, US
★★★★★ 5
Do it yourself
Size: 38"Height × 14" Wide
I purchased a similar set to custom make a dining room table out of butcher block, and it turned out perfect. So with the left over butcher block I purchased these legs and made the perfect kitchen island to match. It is very sturdy and a great price. Everyone wants to know where I purchased it from. I also put a piece of the butcher block across the lower bars and made a lower shelf. Love love love this.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 2, 2025
T
Verified Purchase
Tani
Los Angeles, US
★★★★★ 4
Plan your project right & these will look great!
Size: 38"Height × 14" Wide
These are great legs for a table. They are sturdy and go together nicely. The painted finish is well done, meaning it doesn't scratch or peel or come off easily. Also the way things were packaged was considerate of the weight and possibility of damage during shipment. There were even extra attachment screws included which was helpful since I lost one under the dishwasher. When considering what legs to purchase for your particular table, the height, dimensions, and weight of the top all need to be factored in. I used these bar height legs under a very heavy, 7' long X 2' wide top. Common physics dictates that there will be lateral movement between the 2 "H" shaped leg sets. There HAS to be support between the 2 H leg sets to prevent that lateral movement. So these alone will not support a long table very well, because physics. This is not in any way the fault of this product. Be aware that there is more to the stability equation and be prepared to add cross bracing to your project.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 4, 2025
A
Verified Purchase
Amazon Customer
Charlottesville, US
★★★★★ 5
Hold my computer desk top repaired
Size: 38"Height × 14" Wide
Counter height table legs are sturdy and it holds a great amount of weight. I was easy to adjust height for the table we needed to be repaired with legs. It was a great choice in repair of computer desk. I had a desk that tore apart because of the press board siding. Took the top of of siding and repaired with these legs. I am totally satisfied
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 25, 2025
J
Verified Purchase
Jacob Lingeman
Louisville, US
★★★★★ 2
Wobbly
Size: 38"Height × 14" Wide
Look great but they are not solid. Table is super wobbly
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 21, 2025
M
Verified Purchase
MJ
Chelsea, US
★★★★★ 5
Modern, Sturdy, and Perfect for Outdoor Projects
Size: 38"Height × 14" Wide
These metal pipes made fantastic table legs for our outdoor wood table. They have a sleek, modern look that feels high-end. We sprayed them with Rust-Oleum for added protection, and they’ve held up great. Solid, stylish, and functional—highly recommend for any DIY furniture project!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 25, 2025

recommand products