Product SKU: DH-PFS4226-24ET-240-V3
Product Overview
For security installers building out multi-camera surveillance networks, the Dahua DH-PFS4226-24ET-240-V3 is a 24-port Layer 2 managed PoE switch designed specifically for CCTV and IP camera infrastructure. Featuring a 240W total PoE budget, Hi-PoE support on ports 1 and 2 (up to 60W each), and a dedicated 90W IEEE 802.3bt red port, it handles demanding cameras including high-powered PTZ units without requiring separate power injectors. Built-in 250-metre long-distance PoE transmission over Cat5 cable makes it well suited to large sites where cameras are spread across buildings, car parks, or perimeter fences. The intelligent PoE watchdog automatically detects port failures and restarts communication, while the graduated power management system shuts down one port at a time under overload rather than cutting all devices simultaneously. With 2 Gigabit combo uplink ports and SFP slots, the switch integrates cleanly into existing network infrastructure for centrally managed security deployments.
Key Capabilities
240W PoE Budget Across 24 Ports
A total PoE budget of 240W spread across 24 ports supports large camera counts without a separate PoE injector for every device. Ports 1 and 2 deliver up to 60W each for Hi-PoE cameras, and standard ports supply up to 30W per port for conventional IP cameras and access points.
250-Metre Long-Range PoE Transmission
CCTV mode extends PoE transmission up to 250 metres over Cat5 cable at 10 Mbps, removing the need for additional switches or mid-span injectors on sprawling sites such as warehouses, schools, and multi-building campuses where cameras are located far from the comms room.
90W IEEE 802.3bt Red Port
The dedicated 90W red port supports the latest IEEE 802.3bt standard, providing enough power for high-draw devices such as PTZ cameras with integrated IR and heated housings. This eliminates the need for a separate power supply in installations where a single high-load device would otherwise require additional hardware.
PoE Watchdog for Unattended Sites
The PoE watchdog monitors each port and automatically restarts communication when a network failure is detected. For cameras installed at remote or unstaffed locations, this means a frozen or offline camera can recover without a technician visiting the site to manually power-cycle the device.
Intelligent Overload Power Management
Under a power overload event, the switch sheds load one port at a time starting from the highest-numbered port, rather than dropping all ports simultaneously. This preserves as much of the camera network as possible during a power fluctuation, keeping the majority of the site online while the issue is resolved.
Layer 2 Management with VLAN and QoS
Full Layer 2 management includes 802.1Q VLAN segmentation, STP and RSTP spanning tree, LACP port aggregation, and QoS with 802.1P and DSCP priority. Web-based management via HTTP and HTTPS, SNMP V1/V2C/V3, CLI, and iLinksView are all supported, giving installers and IT teams granular control over the surveillance network.
Best For
- Large Multi-Camera Deployments: 24 PoE ports with a 240W budget provide enough capacity for a full building or site camera network in a single 1U rack unit, reducing the number of switches required.
- Sites with Long Cable Runs: The 250-metre long-range CCTV mode over Cat5 is suited to schools, warehouses, and industrial sites where cameras are positioned well beyond the typical 100-metre Ethernet limit.
- Installations Using PTZ or High-Power Cameras: Hi-PoE ports at 60W each and the 90W 802.3bt red port power demanding pan-tilt-zoom cameras and heated enclosures without separate power adapters.
- Unattended or Remote Sites: The PoE watchdog auto-restart function reduces call-outs caused by cameras freezing on network ports, which is particularly valuable for sites without on-site IT support.
- Managed Network Environments: VLAN segmentation, SNMP, and QoS support allow the switch to integrate into structured IT networks where surveillance traffic needs to be isolated or prioritised alongside other services.
Why Choose the DH-PFS4226-24ET-240-V3
The DH-PFS4226-24ET-240-V3 is built specifically for security network infrastructure rather than general IT use. Where a generic unmanaged PoE switch offers no watchdog function, no intelligent overload management, and no long-range CCTV mode, this Dahua switch addresses the three most common failure points in camera network installations: frozen cameras requiring manual power cycles, cameras installed beyond 100 metres from the switch, and high-power PTZ cameras that exceed standard PoE budgets. The combination of a 240W total budget, 60W Hi-PoE on ports 1 and 2, a 90W 802.3bt red port, and 250-metre extended reach makes it a single-switch solution for sites that would otherwise require multiple injectors, additional switches, or separate power supplies. Available at Security Wholesalers, the DH-PFS4226-24ET-240-V3 suits professional installers who need managed control, reliable uptime, and a switch purpose-engineered for surveillance rather than adapted from an office IT product.
Buyer Decision Tips
PoE Budget Planning: The 240W total budget is shared across all 24 ports. If ports 1 and 2 are each supplying 60W Hi-PoE devices and several other ports are powering 25-30W cameras, the available budget for remaining ports reduces quickly. Before deploying, add up the rated power draw of every connected camera and confirm the total stays below 240W. Factor in that PTZ cameras may draw close to their maximum rated wattage when actively panning or using IR at full intensity.
Long-Range Mode Trade-off: The 250-metre CCTV mode operates at 10 Mbps per port. This is sufficient for individual IP cameras streaming compressed H.265 or H.264 video but is not suited to devices that require higher sustained bandwidth on that port. Confirm the bandwidth requirement of each camera on a long-run port before relying on extended mode, particularly for high-resolution multi-sensor or panoramic cameras.
Key Features & Technical Specifications
| Product Type |
Layer 2 managed PoE switch |
| PoE Ports |
24 x 10/100 Base-T PoE ports |
| Uplink Ports |
2 x 10/100/1000 Base-T combo ports |
| SFP Ports |
2 x 1000 Base-X SFP combo ports |
| Total PoE Budget |
240W maximum |
| Hi-PoE Ports (Ports 1 and 2) |
Up to 60W per port; supports Hi-PoE, PoE+, and PoE |
| Max Per-Port PoE (Standard Ports) |
30W maximum per port |
| 90W Red Port |
IEEE 802.3bt (V2.0 and V3.0) compliant; 90W maximum |
| PoE Standards |
IEEE 802.3af (PoE), IEEE 802.3at (PoE+), Hi-PoE, IEEE 802.3bt |
| Long-Range PoE (CCTV Mode) |
Up to 250 m over Cat5 at 10 Mbps |
| Switching Capacity |
8.8 Gbps |
| Packet Forwarding Rate |
6.55 Mpps |
| MAC Table Size |
4K |
| VLAN |
802.1Q Standard VLAN |
| Spanning Tree |
STP, RSTP |
| Port Aggregation |
Static Link Aggregation, LACP |
| QoS |
High/Low Priority, WRR, 802.1P, DSCP, protocol-based priority |
| Network Management |
Web (HTTP/HTTPS), SNMP V1/V2C/V3, CLI, iLinksView |
| Lightning Protection |
Common Mode 4 KV / Differential Mode 2 V |
| Power Input |
AC 100-240V |
| Operating Temperature |
-10°C to +55°C |
| Humidity |
10-90% |
| Dimensions |
440 x 300 x 44 mm |
| Weight |
3.51 kg |
Ideal Use Cases
School and University Campuses
Multiple buildings spread across a campus often place cameras beyond the standard 100-metre Ethernet limit. The 250-metre CCTV mode over Cat5 allows cameras on distant buildings or sports ovals to connect directly to a central switch without installing intermediate switches at each location.
Warehouses and Industrial Sites
Large floor areas with high ceilings and wide spans require cameras mounted well away from the server room. The combination of 24 PoE ports and 250-metre long-range transmission means a single switch can cover an entire warehouse floor without relay devices at intermediate points along the cable route.
Multi-Story Commercial Buildings
A single DH-PFS4226-24ET-240-V3 in the server room can power cameras across multiple floors using the 24 available PoE ports. VLAN segmentation keeps surveillance traffic isolated from office network traffic, and QoS prioritises video streams to prevent congestion from other business applications.
PTZ and High-Power Camera Installations
Sites requiring PTZ cameras for perimeter or car park coverage benefit from the Hi-PoE ports delivering 60W each on ports 1 and 2, and the 90W 802.3bt red port for the most demanding devices. This removes the need for any supplementary power injection on the highest-draw cameras in the system.
Remote and Unattended Monitoring Sites
The PoE watchdog automatically detects a port-level failure and restarts communication without requiring human intervention. For remote sites such as rural properties, construction sites, or unmanned substations, this reduces the frequency of on-site service visits triggered by a camera losing its network connection.
Choosing the Right Model
- Choose this model if: You are deploying 8 or more IP cameras on a single site, need long cable runs beyond 100 metres to reach perimeter or remote cameras, have one or more PTZ or Hi-PoE cameras in the system, or require managed VLAN and QoS controls to integrate the camera network into an existing IT environment.
- Choose a different model if: Your installation has fewer than 8 cameras and does not require managed features – an unmanaged or semi-managed PoE switch with a lower port count and smaller PoE budget will cost less and be simpler to configure for small residential or single-room deployments.
- Choose a different model if: All cameras in your installation are powered by a PoE NVR with built-in PoE ports and the total camera count does not exceed the NVR’s onboard port count – a standalone switch may not be necessary in that scenario.
FAQs
- How many cameras can the DH-PFS4226-24ET-240-V3 power simultaneously?
It provides 24 PoE ports, so up to 24 cameras can be connected. However, the total power available is capped at 240W across all ports. If each camera draws 15W (a typical figure for a mid-range IP dome or bullet), the switch can comfortably power all 24. If cameras draw more, particularly Hi-PoE devices on ports 1 and 2, the total device power budget must be calculated before deployment to avoid overloading the switch.
- What happens if the total power draw exceeds 240W?
The switch uses intelligent overload management. Rather than cutting power to all ports at once, it shuts down ports one at a time starting from the highest-numbered port until total consumption returns below 240W. This means the cameras on lower-numbered ports remain online during an overload event, preserving coverage for priority camera positions while the excess load is shed.
- Does the 250-metre range work with standard Cat5e or Cat6 cable?
The long-range CCTV mode is confirmed to work over Cat5 cable up to 250 metres at 10 Mbps. Cat5e and Cat6 are both backwards-compatible with Cat5 specifications, so they will work in this mode. The trade-off is that the port speed drops to 10 Mbps in long-range mode, which is sufficient for individual camera streams but not for devices requiring higher sustained bandwidth on that single run.
- What is the PoE watchdog function and why does it matter for CCTV installations?
The PoE watchdog continuously monitors each port for network communication. If it detects that a connected device has stopped responding (as happens when a camera firmware crashes or a network fault occurs), it automatically cuts and restores power to that port to force the device to reboot. For cameras at remote or hard-to-access locations, this can resolve outages without sending a technician to manually power-cycle the camera.
- Can the DH-PFS4226-24ET-240-V3 be rack-mounted?
Yes. The chassis measures 440 x 300 x 44 mm, which is a standard 1U rack form factor at 440 mm wide. It is designed for rack mounting in a server cabinet or comms rack, which is the typical installation approach for commercial and multi-building security deployments. Rack ears or mounting hardware should be confirmed with the supplier before installation.
- How do I manage the switch remotely?
The DH-PFS4226-24ET-240-V3 supports web-based management via HTTP and HTTPS, SNMP versions 1, 2C, and 3, command-line interface (CLI), and Dahua’s iLinksView network management platform. This gives security installers and IT managers multiple options for remote configuration, monitoring port status, reviewing power consumption per port, and updating VLAN or QoS settings without physically accessing the switch.
- Is this switch suitable for outdoor installation or harsh environments?
The DH-PFS4226-24ET-240-V3 is a rack-mountable indoor switch. An IP or weatherproofing rating for the chassis is not confirmed in the available product data. It is designed for installation inside a protected enclosure, server room, or comms cabinet within the operating temperature range of -10°C to +55°C. For outdoor or exposed locations, it would need to be housed in an appropriate weatherproof enclosure. Security Wholesalers can advise on suitable enclosure options for your installation environment.
