Huawei R251D Wall-Plate Remote Unit
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R251D Overview
Select the base R251D around its 802.3af source requirement
Huawei’s R251D power table specifies IEEE 802.3af, while the separate R251D-E record specifies IEEE 802.3at. The base R251D port list describes GE4–GE1 as Ethernet data ports; the E list explicitly identifies GE4/PoE_Out and USB. Match the received full model and planned PSE to the base record. An E-specific powered output or USB function should not be promised from a quotation for the unsuffixed R251D.
Map the four room data ports without counting pass-through as switching
GE1 through GE4 are 10/100/1000M Ethernet connections in the R251D layout. GE0/PoE_IN is the distinct input and uplink connection. The RJ45 Pass Through ports transparently carry network or telephone cables; the chapter does not identify them as an additional switched GE interface or a voice gateway. Agree which room devices use the active data ports and which existing circuit follows the pass-through path.
Check the RU draw rather than importing the E accessory-output scope
The base R251D consumption reference is 11.5 W, qualified by local laws and regulations. The same manufacturer table separately describes the R251D-E 11.5 W value as excluding USB and PoE_OUT output power. Keep those scopes separate in a replacement comparison. Verify the base RU and source allocation at receiving; the E accessory provision is not a basis for a base-model power-output commitment.
Preserve the central AP and software relationship during a room swap
Huawei identifies R251D and R251D-E as remote units connected to and managed by a central AP. Before replacing a room unit, record the central device, software, uplink cable, VLAN and intended commissioning checks. The wireless module supports IEEE 802.11a/b/g/n/ac/ac Wave 2 on both frequency bands with built-in smart antennas. The chapter does not establish arbitrary standalone Fat or cloud operation for a supplied R251D.
Measure the wall box and retain the appropriate security fixing
The R251D reference is 32.5 × 86 × 150 mm in height, width and depth, 0.25 kg, 256 MB DDR3L and 32 MB NOR FLASH. The shared mounting description lists 86 mm, 120 mm and 118 mm junction boxes. Confirm the actual recess, cover and accessory scope. The retention instructions call for an M3×4 crosshead screw, or an M3×4 torx screw with a T9 security screwdriver for the anti-theft option, at 0.15 N·m torque.
Agree room temperature, client-load and indicator acceptance
The manufacturer lists 0°C to +40°C operation at −60–1800 m, with the upper limit reduced 1°C per 300 m above 1800 m through 5000 m, and 5–95% non-condensing humidity. The user reference is up to 256, explicitly dependent on the environment, with 16 VAPs per radio. The hidden indicator can be disabled through software according to the shared characteristics. Test actual registration and room traffic through the central AP, with the planned indicator policy recorded alongside the results.
Document/Firmware Download
R251D Specification
| Exact model | R251D |
| Deployment identity | Indoor wall-plate remote unit; managed by a central AP |
| Wireless scope | IEEE 802.11a/b/g/n/ac/ac Wave 2; 2.4 GHz and 5 GHz; built-in smart antennas |
| Base PoE input | GE0/PoE_IN; IEEE 802.3af |
| Room Ethernet ports | GE1–GE4: 10/100/1000M data ports |
| Pass-through scope | RJ45 ports for transparent network or telephone cabling; not identified as switched ports or a voice gateway |
| E variant comparison | R251D-E lists 802.3at input, GE4/PoE_Out and USB; functions not transferred to base R251D |
| Base consumption reference | 11.5 W; local regulatory conditions apply |
| Power-scope comparison | R251D-E value excludes USB and PoE_OUT outputs; keep separate from base record |
| Management dependency | Confirm exact central device, software and receiving configuration |
| Junction-box context | 86 mm, 120 mm or 118 mm; verify physical fit |
| Dimensions H × W × D | 32.5 × 86 × 150 mm |
| Reference weight | 0.25 kg |
| Device memory | 256 MB DDR3L; 32 MB NOR FLASH |
| Retention screw | M3×4 crosshead or torx; T9 for torx security option; 0.15 N·m |
| Client/VAP references | Up to 256 users, environment-dependent; 16 VAPs per radio |
| Operating temperature/altitude | 0 to +40°C at −60–1800 m; upper limit derates 1°C per 300 m above 1800 m through 5000 m |
| Humidity | 5–95% non-condensing |
| Indicator context | Hidden panel indicator; software can disable it as described by Huawei |
R251D Warranty
 | Product Quotation |  | Condition and Packaging |
 | Return Eligibility |  | Returns and Replacement |
 | Shipping Arrangements |  | Warranty Terms |
R251D FAQ
What is R251D?
Huawei R251D Wall-Plate Remote Unit is a HUAWEI R200 Series Access Points product supplied by YYST Global for enterprise IT procurement and infrastructure projects.
What wireless scope is listed for R251D?
For R251D, the manufacturer specification lists wireless scope as IEEE 802.11a/b/g/n/ac/ac Wave 2; 2.4 GHz and 5 GHz; built-in smart antennas.
What are the power requirements for R251D?
For R251D, the manufacturer specification lists base poe input as GE0/PoE_IN; IEEE 802.3af.
What interfaces and ports does R251D provide?
For R251D, the manufacturer specification lists room ethernet ports as GE1–GE4: 10/100/1000M data ports.
Is R251D available from YYST Global?
Contact YYST Global to confirm availability for R251D, the required quantity, exact configuration, delivery destination and current lead time before ordering. A product listing does not confirm current inventory.
Related products
Related R251D
Huawei R251D-E Wall-Plate Remote Unit
Huawei R251D-E is an indoor wall-plate remote unit for agile distributed Wi-Fi, connected to and managed by a central AP. The E model requires IEEE 802.3at PoE input through GE0/PoE_IN, adds GE4/PoE_Out and a USB2.0 storage interface, and also provides GE1–GE3 Ethernet ports and separate RJ45 pass-through ports. Huawei lists 11.5 W unit consumption excluding the USB and PoE_OUT output power. The shared characteristics describe dual-band IEEE 802.11ac Wave 2, smart antennas and installation in 86 mm, 120 mm or 118 mm junction boxes; verify the exact mounting and central-AP arrangement.
Huawei R250D-E Wall-Plate Remote Unit
Huawei R250D-E is a wall-plate remote unit connected to a central AP in Huawei agile distributed Wi-Fi. Its exact hardware chapter separates GE0/PoE_IN from GE1/PoE_OUT, provides GE2–GE4 Gigabit data connections, and lists a 48 V ±5% DC input alongside IEEE 802.3af/at PoE. A USB2.0 storage connection and an RJ45 cable pass-through support the room wiring arrangement. The documented 11.5 W consumption excludes USB and downstream PoE output power. R250D-E uses an 86 mm plate and dual-band IEEE 802.11ac Wave 2; it is not interchangeable with the simpler R250D port layout.
Huawei R250D R200 Series Agile Distributed Remote Unit
R250D is an exact Huawei R200-series remote unit used in a compatible central-AP design; it is not a standalone AP5000 access point.
Huawei R240D Wall-Plate Remote Unit
Huawei R240D is an indoor wall-plate remote unit for a central-AP-managed agile distributed Wi-Fi system. Its room-facing ETH0–ETH3 interfaces run at 10/100M, while the GE/PoE uplink supports 10/100/1000M and PoE input. Huawei separately identifies phone connections for a POTS phone or modem and for a traditional PSTN. R240D accepts 12 V ±10% DC or IEEE 802.3af/at PoE, with an 8.7 W consumption reference. The manufacturer restricts this 86-type-box design to countries and regions supporting that box format and documents dual-band IEEE 802.11a/b/g/n/ac operation.
R230D Huawei R200 Series Indoor 802.11ac Wave 1 2x2 MIMO Access Point
Huawei R230D is an indoor R200 remote radio unit for distributed Wi-Fi, with dual-band 2x2 MIMO, one 10/100M Ethernet port and 802.3af PoE input. Confirm the central AP and software combination before ordering.