The Dahua S3218-16ET-135 is an 18-port unmanaged desktop switch built for larger surveillance and networking deployments that require both high port density and strong PoE power capacity. With sixteen PoE-enabled ports and dual combo uplink ports, it is designed to support extensive multi-camera systems and demanding network setups.
Featuring a high-performance switch engine and large cache, the Dahua S3218-16ET-135 delivers smooth, uninterrupted transmission of video streams even under heavy network load. This makes it well suited for surveillance environments where consistent, reliable data flow is essential.
Power capacity is a major strength of this switch, with a total PoE budget of 135W across its sixteen PoE ports. Two dedicated red ports support IEEE802.3bt and Hi-PoE standards, delivering up to 90W each for high-power devices such as PTZ cameras, while the remaining ports supply standard IEEE802.3af and IEEE802.3at power.
The Dahua S3218-16ET-135 also includes VIP port functionality, prioritizing transmission for ports 1 through 8. This ensures that critical devices connected to these ports receive consistent bandwidth, even when the rest of the network is under heavy load.
Long Distance PoE transmission extends the usable range up to 250 meters, well beyond standard Ethernet limitations, making the switch particularly useful for larger facilities or installations where cameras are positioned far from the switch location. Built-in PoE watchdog functionality further improves reliability by automatically monitoring camera status and rebooting unresponsive devices.
With dual combo uplink ports supporting both RJ-45 Gigabit and SFP fiber connections, the Dahua S3218-16ET-135 offers flexible options for connecting to core network infrastructure over copper or fiber. This adaptability makes it a practical fit for a wide range of installation environments.
Engineered for durability, the switch operates reliably across a wide temperature range of -10°C to +55°C. Combining high port density, a substantial 135W PoE budget, intelligent monitoring, and flexible uplink options, the Dahua S3218-16ET-135 is a capable solution for larger, power-intensive PoE networks.
S3218-16ET-135 – Hardware Feature
| Parameter | Detail / Value |
| Included Power Adapter | Yes |
| PoE | Yes |
| Ethernet Port | 16 |
| Ethernet Port Speed | 10/100 Mbps |
| Ethernet Port Uplink Speed | 10/100/1000 Mbps |
| Optical Port Uplink Speed | 1 Gbps |
| Description of Function Slots |
Port 1-16: 16 × RJ-45 10/100 Mbps;
Port 17-18: 2 × RJ-45 10/100/1000 Mbps (Combo);
Port 17-18: 2 × SFP 1000 Mbps (Combo) |
| Power Supply | Built-in power supply: 100-240 VAC, 50/60 Hz, 3 A |
| Operating Temperature | –10 °C to +55 °C (+14 °F to +131 °F) |
| Operating Humidity | 5%–95% (RH), non-condensing |
| Storage Temperature | –40 °C to +75 °C (–40 °F to +167 °F) |
| Storage Humidity | 5%–95% (RH), non-condensing |
| Power Consumption | Idling: ≤6 W ; Full load: 154 W |
S3218-16ET-135 – Performance
| Parameter | Detail / Value |
| Management Type | No |
| Switching Capacity | 7.2 Gbps |
| Packet Forwarding Rate | 5.36 Mpps |
| Packet Buffer Size | 4 Mbit |
| Jumbo Frame | 15K Byte |
| MAC Table Size | 8 K |
| Communication Standard | IEEE802.3; IEEE802.3u; IEEE802.3x; IEEE802.3ab; IEEE802.3z |
S3218-16ET-135 – Feature
| Parameter | Detail / Value |
| PoE Protocol | IEEE802.3af; IEEE802.3at; Hi-PoE; IEEE802.3bt |
| PoE Power | Port 1-2 ≤ 90 W, Port 3-16 ≤ 30 W, total ≤ 135 W |
| PoE Pin Assignment | 1,2,4,5 (V+),3,6,7,8 (V-) |
| Long Distance PoE Transmission | Yes |
S3218-16ET-135 – General
| Parameter | Detail / Value |
| Statics Protection | Air discharge: 8 kV; Contact discharge: 6 kV |
| Lighting Protection | Common mode: 4 kV; Differential mode: 2 kV |
| Net Weight | 2.23 kg (4.92 lb) |
| Gross Weight | 2.88 kg (6.35 lb) |
| Product Dimensions | 440 mm × 220 mm × 44 mm (17.32″ × 8.66″ × 1.73″) (L × W × H) |
| Packaging Dimensions | 540 mm × 342 mm × 90 mm (21.26″ × 13.46″ × 3.54″) (L × W × H) |
| Casing Material | Sheet metal |
| Installation | Rack mount; Desktop mount |
| Certifications | CE |
S3218-16ET-135 – Transmission Performance
| Standard / Mode | Cable (m) | Load Capacity (W) | Bandwidth (Mbps) |
| IEEE802.3bt 90 W | 100 | 71.3 | 100 |
| 150 | 62 | 10 | |
| 200 | 51 | 10 | |
| 250 | 40 | 10 | |
| Hi-PoE 60 W | 100 | 53 | 100 |
| 150 | 50 | 10 | |
| 200 | 47 | 10 | |
| 250 | 37 | 10 | |
| IEEE802.3at 30 W | 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. The actual transmission distance may vary due to power consumption of connected devices or the cable type and status.
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