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WLAN Hardware Installation and Maintenance Guide

AirEngine 5761-21 (02354VQK)

AirEngine 5761-21 (02354VQK)

Overview

Table 2-106 Basic information about the AirEngine 5761-21
Item Details
Description AirEngine5761-21(11ax indoor,2+4 dual bands,smart antenna,USB,BLE)
Part Number 02354VQK
Model AirEngine 5761-21
First supported version V200R021C10SPC100

Depending on the production batch, the device has multiple part numbers, which have the same software specifications but different minimum versions supported. Additionally, the hardware specifications, such as the weight and power consumption, are slightly different.

Appearance

Figure 2-64 Appearance of the AirEngine 5761-21

Ports

Figure 2-65 Ports on the AirEngine 5761-21

1

Security slot

2

GE

3

USB

4

2.5GE/PoE_IN

5

DC 12V

-

-
Table 2-107 Ports on the AirEngine 5761-21
Port Connector Type Description Available Components
2.5GE/PoE_IN RJ45 100M/1000M/2.5G auto-sensing Ethernet electrical port that connects to the wired Ethernet and supports PoE input.

Network cable
GE RJ45 Ethernet electrical port that supports 10/100/1000M auto-sensing and connects to the wired Ethernet.

Network cable
DC 12V DC connector Connects to a 12 V power adapter.

12 V DC power adapter
USB USB 2.0 Type A Connects to an IoT terminal to implement IoT applications.

IoT module

Indicators and Buttons

Figure 2-66 Indicators and buttons on the AirEngine 5761-21

1

Indicator

2

Default
Table 2-108 Indicators on the AirEngine 5761-21
Silkscreen Name Color Status Description
- System indicator - Off The system is not running.
White Steady on
  • The system is just powered on.
  • The system is starting after a reset.
  • The upper-layer system is starting.
White Steady on after blinking once After the hardware reset is cleared and the software starts, the indicator blinks once. Then, the indicator is steady on until the bottom-layer system starts.
White Slow blinking (0.5 Hz)

The AP is running properly, the Ethernet connection is normal, and STAs are associated with the AP.

This state is supported in V200R022C00 and later versions.
White Slow blinking (0.2 Hz)

The AP is running properly, and the Ethernet connection is normal.

For V200R022C00 and later versions, this state also indicates that no STA is associated with the AP.
White Blinking once every 0.25s (4 Hz)
  • The bottom-layer system is being started.
  • The software is being upgraded.
  • After the software is loaded and started, the AP requests to go online in Fit or cloud management mode. The indicator remains in this state till the AP successfully goes online.
Red (blinking red and white at the same time, causing color deviation) Blinking once every 0.25s (4 Hz)

Hold down the Default button for more than 6 seconds to restore the factory settings.

This function is supported in V200R024C00 and later versions.
Red Steady on The system is faulty.
Table 2-109 Buttons on the AirEngine 5761-21
Silkscreen Name Description
Default Reset button
  • For versions earlier than V200R022C00SPC100: Hold down the button for more than 3 seconds to restore the factory settings and restart the device.
  • For versions from V200R022C00SPC100 to V200R023C10: if you press the button, the device resets. If you hold down the button for more than 6 seconds, the device restores the factory settings, switches to the Fit mode, and restarts.
  • For V200R024C00 and later versions: If you press the button, the device resets. If you hold down the button for more than 6 seconds, the indicator blinks red and white fast at the same time (causing color deviation), and the device restores the factory settings, switches to the Fit mode, and restarts.

Technical Specifications

Table 2-110 Technical specifications of the AirEngine 5761-21
Item Specification
Installation Type
  • Wall
  • Ceiling (Solid Wall/Gypsum Board/Spring Tee/Flat-Edge T-Rail/Channel Rail/Beam/Threaded Rod)
  • Junction Box (86 mm/1-Gang 120 mm/Octagonal/2-Gang 120 mm)
Dimensions without packaging (H x W x D) [mm(in.)] Diameter x depth: 220 mm x 50 mm (8.66 in. x 1.97 in.)
Weight without packaging [kg(lb)] 1.06 kg (2.34 lb)
Storage NAND Flash 512 MB
Console port BLE console
Maximum power consumption [W] 17.9 (excluding USB), 802.3at/af power supply
Power supply mode
  • PoE
  • DC power adapter
Rated input voltage [V] 12 V
Input voltage range [V]

DC: 12 V ± 10%

PoE: 802.3at/af
Service port surge protection

PoE port:

Differential mode (48 V-RTN): 0.5 kV (1.2/50 us, 42 ohms), criterion B

Common mode (8 wires to ground): 6 kV (1.2/50 us, 42 ohms), criterion B
PoE OUT Not supported
Maximum number of physical ports on the entire device

2.5GE (RJ45) x 1, 100M/1000M/2.5G auto-sensing

GE (RJ45) x 1, 10M/100M/1000M auto-sensing
Long-term operating temperature [°C(°F)] –10°C to +50°C (14°F to 122°F) (From 1800 m to 5000 m [5905.51 ft. to 16404.20 ft.], the maximum ambient temperature decreases by 1°C [1.8°F] for every 300 m [984.25 ft.] increase in altitude.)
Storage temperature [°C(°F)] –40°C to +70°C (–40°F to +158°F)
Long-term operating relative humidity [RH] 5% RH to 95% RH, non-condensing
Long-term operating altitude [m(ft.)] –60 m to +5000 m (–196.85 ft to +16404.20 ft)
Atmospheric pressure [kPa] 53kPa - 106kPa ETSI 300 019-2-3
Ground Floating ground
USB USB 2.0
IoT slot Not supported
BLE BLE5.2
Radio number 2
Operating frequency band
  • 2.4GHz
  • 5GHz
MIMO spatial streams

Radio 0 (2.4 GHz): 2x2

Radio 1 (5 GHz): 4x4
Wi-Fi standard

2.4 GHz: 802.11b/g/n/ax

5 GHz: 802.11a/n/ac/ac Wave 2/ax
Radio interface Built-in smart antennas
Antenna gain

2.4G:

4 dBi/chain (peak value)

2 dBi (combined gain)

5G:

5 dBi/chain (peak value)

3 dBi (combined gain)

BLE: 4 dBi
Maximum transmit power

2.4 GHz:

22 dBm/chain

25 dBm (combined power)

5 GHz:

22 dBm/chain

28 dBm (combined power)

BLE: < 10 dBm
Singal radio transmit power [dBm]

2.4G: -10 dBm to 22 dBm/chain

5G: -10 dBm to 22 dBm/chain
MTBF [year] 784 year
MTTR [hour] 0.5 hour
Frequency stability [ppm] +/-20
802.3at power supply description No function is limited.
802.3af power supply description

Wi-Fi: 2.4 GHz (2x2) + 5 GHz (2x2). The maximum combined power is adjusted to 22 dBm (2.4 GHz) and 22 dBm (5 GHz).

Wired network port: 2.5GE/POE_IN ports are used as GE ports, and GE electrical ports are unavailable.

Other ports: The USB port is unavailable.
DC power supply description No function is limited.
Translation
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Update Date：2025-08-01
Document ID：EDOC1100278610
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