PoE (Power over Ethernet) has long been the standard for IP surveillance and corporate wireless networks. A single twisted pair carries both data and power — no need to run separate 220 V to every camera.
The key limitation of classic PoE is 100 metres between the switch and the device. On large sites — resorts, warehouses, factory grounds — that is not enough, and intermediate cabinets with extra switches are needed.
What ePoE is
ePoE is a Dahua technology that extends power and data transmission up to 800 metres over standard Cat6 twisted pair. At the usual 100 metres the full 100/1000 Mbps speed remains available.
- Up to 800 m at 10 Mbps — enough for most HD / FullHD IP cameras.
- Up to 300 m at 100 Mbps — enough for 4K cameras and WiFi access points.
- Up to 100 m at 1 Gbps — the standard mode, compatible with all equipment.
How it changes the project
On a large site such as a resort or warehouse complex, instead of three or four intermediate cabinets with switches we deploy one central ePoE switch and run twisted pair directly to each camera and access point.
Fewer points of failure, simpler power distribution, easier maintenance, shorter and cheaper cable runs. For the customer that means lower installation cost and higher reliability in service.
Compatibility
An ePoE switch also works with classic third-party PoE / PoE+ devices from Hikvision, Axis, Ubiquiti and others through standard ONVIF. As long as the camera supports 802.3at/af, it will connect to the ePoE line without issue.
ePoE mode is activated automatically when there is a compatible Dahua ePoE device on the other end of the link.
Where we apply it
- Resorts and hotel complexes with large grounds.
- Warehouses and production facilities.
- Parking lots, yards, open perimeters around buildings.
- Residential communities and villages with distributed pole-mounted cameras.
The result is reduced infrastructure cost and easier future expansion: when the customer wants to add more cameras, we simply plug them into the existing ePoE backbone.
