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  • R251D/R251D-E Remote Units

    R251D/R251D-E Remote Units

    RUs with built-in smart antennas, wider coverage area, and new “Morning Dew” design that blends into their surroundings.

Overview

  • Overview
  • Features
  • Specifications
  • Resources
  • Support
R251D/R251D-E Remote Units

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.

Antenna Technology

Flexible Smart Antenna Array Technology

Provides precise coverage for STAs, reduces interference, and improves signal quality, enabling signals to follow users.

Flexible Installation

Flexible Installation

Easy to install: Ceiling-mounted, wall-mounted, and desk-mounted methods.

Diversified Features

Diversified Features

One GE uplink port, four GE downlink ports, and two RJ45 pass-through phone ports (compatible with RJ11).

Specifications¹

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.

Resources

Brochures

Huawei R251D&R251D-E Access Point Data Sheet

White papers

Huawei WLAN 802 11ac Wave 2 Technical White Paper

Technical Support

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