National Research and Education Network
Education Cloud Data Center
Multi-Channel HD Telemedicine
Over The Top/Multi-Tenant Data Center (OTT/MTDC)
Internet Exchange Point (IXP)
Internet Access Provider (IAP)
Design & Simulation
Planning & Analytics
Oil & Gas IoT
HPC & Operations Management
Digital Urban Rail
Retail Cloud Platform
Enterprise Data Center
Server - Intelligent Computing
Enterprise Cloud Communications
Network Management System
Tackling the Emergency Together
Letting technology help in a time of need
Ubiquitous Connectivity Makes Digital Transformation Possible
Economical and Powerful AI Computing
Horizon Digital Platform
Connecting the Physical and Digital Worlds to Help Customers Achieve Successful Digital Transformation
Leading New ICT
228 Fortune Global 500 Companies Choose Huawei as Digital Transformation Partner
Secure And Resilient Solutions
Buy from Huawei
If you want to get more information about your project, you can submit your information and we will contact you as soon as possible.
If your company has signed an eDeal contract with Huawei, please buy your required product/solution via the link below.
Buy from resellers
Search for a nearby reseller and get direct contact information.
Become a Partner
Resources and Support
Huawei Authorized Learning Partner
Huawei ICT Academy
Huawei ICT Competition
Enterprise Training Service
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.