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R251D/R251D-E Remote Units
Huawei R251D and R251D-E are 802.11ac Wave 2 Remote Units (RUs) used in Huawei Distributed Wi-Fi Solution. They have built-in smart antennas and support 2 x 2 MIMO and two spatial streams, achieving a rate of 1.267 Gbit/s. The R251D and R251D-E are applicable to environments with complex wall structures and high-density rooms, such as schools, hotels, hospitals, and office meeting rooms.
Provides precise coverage for STAs, reduces interference, and improves signal quality, enabling signals to follow users.
Easy to install: Ceiling-mounted, wall-mounted, and desk-mounted methods.
One GE uplink port, four GE downlink ports, and two RJ45 pass-through phone ports (compatible with RJ11).
|Specifications||R251D and R251D-E|
|Dimensions (H x W x D)||32.5 mm x 86 mm x 150 mm|
|Power Input||PoE power supply: In compliance with IEEE 802.3af/at|
|Interface Types||Uplink: 1 x GE
Downlink: 4 x GE
2 x Pass-through RJ45 port
1 x USB port (supported by the R251D-E)
|Built-in Bluetooth||BLE4.1 (supported by the R251D-E)|
|PoE OUT||Supported by R251D-E: Maximum 13.6W (802.3at-compliant, supported only by GE4)|
|Operating Temperature||0°C to 40°C|
|Antenna Type||Built-in smart antennas|
|Maximum Number of Users||≤ 256|
|Maximum Power Consumption||R251D: 11.5W
R251D-E: 11.5W (excluding the output power of the USB port and PoE_OUT port)
Note: The actual maximum power consumption depends on local laws and regulations.
|Maximum Transmit Power||2.4 GHz: 23 dBm (combined power)
5 GHz: 23 dBm (combined power)
Note: The actual transmit power depends on local laws and regulations
|MIMO: Spatial Streams||2 x 2:2|
|Radio Protocols||802.11a/b/g/n/ac/ac Wave 2|
|Maximum Rate||1.267 Gbit/s|
1. This content is applicable only to regions outside mainland China. Huawei reserves the right to interpret this content.