SKU: 438671262

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

Sale price$4157.55 Regular price$4619.50
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Ships within 48 hours · Estimated delivery Aug 13 - Aug 18

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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

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Verified Purchase
readingisnotenough
West Palm Beach, US
★★★★★ 5
Small jewelry box bit potential
Color: Black
Very stable product perfect to have on dresser or travel. Keeps all of my items organized
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2026
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Verified Purchase
H C
Lake Worth, US
★★★★★ 5
Prefect Travel Case
Color: Black, Color: Black
I got this for taking my jewelry on the go. I have to say that I was pleasantly surprised by the quality it feels very sturdy. It has several spots to hold jewelry and keep it organized. The outside is textured and it closes with a snap which can be done easily.
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Reviewed in the United States on May 6, 2026
T
Verified Purchase
TopConsumer
Draper, US
★★★★★ 4
Small, bu holds a lot
Color: Black
I initially purchased the Jewelry Box Necklace Ring Storage Organizer as a gift for my 8-year-old daughter. The compact design and practical features seemed perfect for her little trinkets. However, its quality and style so took me upon receiving it, I decided to keep it for myself! The jewelry box is small, but it holds a lot with a double-layer structure that provides ample storage space for various types of jewelry. It easily accommodates rings, necklaces, and other small accessories without clutter. One of the highlights of this product is its portability. Its compact size makes it an ideal travel companion. I've taken it on several trips, and it has proven incredibly convenient. It keeps all my jewelry neatly organized and easy to find, eliminating the hassle of untangling necklaces or searching for a matching earring.
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Reviewed in the United States on October 1, 2023
I
Verified Purchase
I didn’t receive the item and I let Amazon know the item was not delivered. Apparently, they don’t care to follow up with my lost order. Hummm, I wonder how the owner of Amazon would solve this problem.
Massapequa, US
★★★★★ 5
Small but nice
Color: green
Cute small jewelry box—
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Reviewed in the United States on May 21, 2026
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Verified Purchase
Catherine Moore
Bozeman, US
★★★★★ 5
Perfect travel mate!
Color: Black, Color: Black
I love this small travel jewelry case. It is a great size for a vacation anywhere. I like how everything has a place to keep you well organized. Great value for the money and good quality material. so easy to snap shut and put in your suitcase. Sleek and black color that is classy.
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Reviewed in the United States on December 12, 2025

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