DAHUA S4220-16GT-240 20-Port Managed Desktop Gigabit Switch with 16-Port PoE
SKU: 97411746876

DAHUA S4220-16GT-240 20-Port Managed Desktop Gigabit Switch with 16-Port PoE

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Description

DAHUA S4220-16GT-240 20-Port Managed Desktop Gigabit Switch with 16-Port PoES4220 16GT 240 > Layer 2 network management PoE switch. > Supports web, and network management software based on SNMP. > Network redundancy: STP RSTP. > Supports PoE power consumption management, PoE power off management. > Supports IEEE802. 3af, IEEE802. 3at. > Port 1 and port 2 support IEEE802. 3bt, and are compatible with Hi PoE. > Supports PD alive mode. > Supports 250 m long distance transmission mode. Product Data Hardware Included Power Adapter

S4220-16GT-240

> Layer 2 network management PoE switch.

> Supports web, and network management software based on SNMP.

> Network redundancy: STP/RSTP.

> Supports PoE power consumption management, PoE power off management.

> Supports IEEE802.3af, IEEE802.3at.

> Port 1 and port 2 support IEEE802.3bt, and are compatible with Hi-PoE.

> Supports PD alive mode.

> Supports 250 m long-distance transmission mode.



Product Data

Hardware

Included Power Adapter

Yes

PoE

Yes

Ethernet Port

18

Optical Port

2

Ethernet Port Speed

10/100/1000 Mbps

Optical Port Speed

1000 Mbps

Description of Function Slots

Port 1-16: 16 × RJ45 10/100/1000 Mbps(PoE)
Port 17-18: 2 × RJ45 10/100/1000 Mbps
Port 19-20: 2 × SFP 1000 Mbps

Debugging

Console × 1

Reset Button

1

Power Supply

100-240 VAC, 50/60 Hz, 3.5 A

Operating Temperature

–10°C to 55°C (+14°F to +131°F)

Operating Humidity

5%–95% (RH)

Power Consumption

Idling load: ≤ 20 W;
Full load: 240 W

Performance

Management Type

Yes

MTBF

467125.73 hours

Switching Capacity

56 Gbps

Packet Forwarding Rate

29.76 Mpps

Packet Buffer Size

4.1 Mbit

Jumbo Frame

10K Byte

MAC Table Size

8K

VLAN Number

4K

VLAN Interface

10

Dynamic ARP

512

Communication Standard

IEEE 802.3, IEEE 802.3u, IEEE 802.3x, IEEE 802.3ab, IEEE 802.3z, IEEE 802.3ad

Feature

PoE Protocol

IEEE802.3af (PoE); IEEE802.3at (PoE+); Hi-PoE; IEEE802.3bt (PoE++)

PoE Power

Port 1-2: ≤ 90 W

Port 3-16: ≤ 30 W

Total: ≤ 240 W

PoE Power Consumption Management

Yes

PoE Pin Assignment

1,2,4,5 (V+),3,6,7,8 (V-)

Long Distance PoE Transmission

Yes

Spanning Tree Protocol

STP; RSTP

VLAN Function

Yes

Link Aggregation

Static link aggregation; LACP

IEEE 802.3x Flow Control

IEEE 802.3X-based flow control (full-duplex)

Multicast

IGMP Snooping

DHCP Function

DHCP client
DHCP-Server
DHCP-Snooping

Security

IEEE 802.1x
ACL

Equipment Management

WEB(http and https)
Telnet
SNMP V1/V2C/V3

General

Statics Protection

Air discharge: 8 kV;
Contact discharge: 6 kV

Lighting Protection

Common mode: 4 kV;
Differential mode: 2 kV

Net Weight

3.405 kg (7.51 lb)

Gross Weight

4.51 kg (9.94 lb)

Product Dimensions

440 mm × 300 mm × 44 mm (17.32" × 11.81" × 1.73")

Packaging Dimensions

525 mm × 410 mm × 110 mm (20.67" × 16.14" × 4.33")

Certifications

CE, FCC

Transmission Performance:

Switch power supply voltage 53V.

CAT5E/CAT6. Max. DC resistance < 10Ω/100m

Cable(m)

Load Capacity(W)

Bandwidth(Mbps)

IEEE802.3bt 90W

100

71.3

100

150

62

10

200

51

10

250

40

10

Hi-PoE 60W

100

53

100

150

50

10

200

47

10

250

37

10

IEEE802.3at 30W

100

25.5

100

150

25.5

10

200

25.5

10

250

25.5

10

Note: Data from this table was collected by Dahua test lab and is for reference only . If there is inconsistency between field application and the table, the field result shall prevail.
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Exchange/Return Notes
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SKU: 97411746876

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4.1 ★★★★★
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A
Verified Purchase
Ann
Omaha, US
★★★★★ 5
Timex. Life is ticking.
Color: Black, Size: One Size
A family member is headed off to Navy boot camp and is required to have a watch-a black watch. But...it cannot be anything in the realm of, be like, or indeed be an Apple Watch. The search began for a simple timepiece. Economy was important since after the 8 weeks of boot camp ended, use of the current watch would be resumed. Enter Timex...(the world's largest manufacturer of watches and mechanical time fuses). During the Amazon search there were all manner of economically (actually cheap) watches noted to be available, so many that it was simply overwhelming. Timex...tried and true since 1854 (just a fun fact, but actually attests to the quality of the company) was the chosen one. A simple but reliable timepiece was required, and certain qualifications were needed. First, it had to be an accurate time keeper and have a second hand, and have a date indicator. Secondly, there had to be an element of water resistance (this is Navy boot camp after all, so water is important!). Thirdly, it had to be black. Fourth, no bells or whistles whatsoever. Finally, a face with 24 hour/military time would be a bonus. This Timex Rugged Core Expedition Analog Watch fit the bill. Upon arrival it was packaged in a traditionally square box the size of the watch, no frills but sturdy enough to ward off damage during shipping. Once opened the first thing noticed was the face of the watch. It was black, with white numerals in both standard and 24 hour/military time, had a red second hand, luminescent hour and minute hands, and date indicator. The nylon band was also black, had ridges, and had a fastener like a belt. At the end of the band were two extrusions which seemed to lock the excess band into place once it was fastened. After wearing a number of days, the watch has kept excellent time matching the Apple Watch. Both watches were worn on the same arm at the same during the day and during sleep. They were worn during regular daily activities, during exercise and during strenuous garden work such as hauling, digging holes, dragging 40 lb bags, etc. Time was checked multiple times per day, and the time on each watch was exactly the same every time checked. The Timex was water resistant during a 5 minute shower and while submerged water. This is not a dive watch but, according to the ad, is water resistant to 50 feet for light swimming. The performance of this watch has been more than satisfactory executing in stellar fashion everything it was stated to be able to do. I can recommend this watch for boot camp purposes without reservation. Top 3 Likes: -Reliable keeping accurate time, has military time numerals -Is water resistant as tested -Is black, attractive with luminescent hands, second hand, date, and light up face Top 3 Dislikes: -The band is stiff and somewhat difficult to latch -The two little extrusions do anchor the band, but are difficult to undo to take off the watch -Only two dislikes!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 28, 2024
R
Verified Purchase
rlbrandner
Cuba, US
★★★★★ 5
Timesx quality still rules.
Color: Black, Size: One Size
Excellent everyday watch. Stylish, easy to read, and accurate. Needed a knock around watch and this puts up with it's share of abuse. It's a bit more expensive than some others in this class, but Timex is well-worth the money in quality. I use mine for eveything except when I need something more formal.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 1, 2025
A
Verified Purchase
Alex
Dallas, US
★★★★★ 1
Dependability and accuracy
Color: Black, Size: One Size
This watch is awful, I had it for a month and it lags behind and does not keep the right date. I am a nurse so I need to have accuracy and dependability and this watch is not it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 16, 2026
S
Verified Purchase
SB
Los Angeles, US
★★★★★ 5
Good stuff
Color: Black, Size: One Size
fits well, good for every day wear, looks great, great value. the black is a good color. would have loved some more insight into how to change the date but other than that would def recommend
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Reviewed in the United States on January 31, 2026
O
Verified Purchase
Oscar De Leon
New York, US
★★★★★ 5
Beutiful and rugget watch.
Color: Black, Size: One Size
Beutiful aspect, great and rugget watch, looks great on the wrist, nice and clear backlight, very ligth watch.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 6, 2026

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