300Mbps 802.11b/g/n Wireless N Router
The EnGenius ESR1221N2 is a Wireless-N Router that operates in the 2.4GHz frequency range at wireless speeds up to 300Mbps. This versatile router provides superior range and high speed wireless connectivity and is backward compatible with 11g devices.

The ESR1221N2 is designed to support multiple wireless users who need access to the Internet or access to networked resources like shared or wireless printers or shared hard drives so they can transfer files within a home or small office network while at the same time streaming video, music and other multimedia applications. The ESR1221N2 applies QoS (Quality of Service) to prioritize multimedia and other bandwidth-sensitive traffic, letting users enjoy reliable and real-time multimedia entertainment applications or smoother VoIP phone calls.

The ESR1221N2 supports the latest industry standard wireless data encryption schemes (WPA and WPA2) to protect against unauthorized access to the home or small office network. A powerful Stateful Packet Inspection (SPI) Firewall and Network Address Translation (NAT) also protects against malicious software (malware) attacks from the Internet offering an additional layer of privacy and security.

The ESR1221N2 is a fast, versatile and reliable Wireless-N router for budget-minded families and small offices that need to share information or want to enjoy Internet-based entertainment applications.

• Up to 300Mbps
• Intelligent QoS to Optimize the Media Streaming
• Push Button Wireless Security Setup
• External Antenna to Get Greater Coverage
• WEP / WPA / WPA2

• Device Type: Wireless Router

• Speed: up to 300Mbps

• Wireless Network Standard:
IEEE 802.3
IEEE 802.3u
IEEE 802.11g
IEEE 802.11n

• Security: WEP / WPA / WPA2

• Firewall: Advanced SPI Firewall and NAT

• VPN Passthrough: IPSec / PPTP / L2TP


Wireless 802.11n Technology

The most advanced wireless networking technology for better range and faster speed and backward compatible with 802.11g wireless devices.

Multiple SSID

Create a separate network for sharing your Internet connection with others while keeping your data private

Push Button Security Setup

Configurable through push-button setup, your network PC’s web browser, or the included setup wizard

Security & Management


Powerful SPI Firewalll


WMM based on QoS


Easy Setup

The Wizard CD guides users to setup ESR1221N2 smoothly

RF Specification

Frequency Band
2.400–2.484 GHz

Modulation Technology OFDM: BPSK, QPSK, 16-QAM, 64-QAM


Operation Channels 11 for North America, 14 for Japan, 13 for Europe

Wireless Mode 11b/11g/11n

Channel Selection (Setting varies by Country)

Channel Bandwidth (Auto, 20Mhz, 40Mhz)

Transmission Rate 11g: Best. 54, 48, 36, 24, 18, 12, 11, 9, 6, 5.5, 2, 1 in Mbps

Receive Sensitivity (Typical)

IEEE 802.11n @ -82 dBm

IEEE 802.11g @ -90 dBm

IEEE 802.11b @ -90 dBm

Available Transmit Power

IEEE 802.11n up to 16 dBm

IEEE 802.11g up to 16 dBm

IEEE 802.11b up to 18 dBm

Antenna *2     Peak Gain=2 dBi

Software Features


Operation Mode AP/Router


DHCP Server

Static Routing Table


PPTP • PPPoE • Static IP • DHCP Client • Clone MAC address



Static Routing

Dynamic Route

Virtual server mapping

IP address mapping

Port Forwarding

Port Triggering

Special application

DNS Relay


Time Zone(NTP client)


Block ICMP Ping

DoS(Block ICMP Ping, Port scan, Sync Flood)

MAC/IP Filtering

ICMP Blocking

SPI (Stateful Packet Inspection)

DMZ (Demilitarized Zone) Host

Policy Based Parental Controls

Port Range / Service Filtering

Internet Domain Restriction

VPN pass-through (PPTP, L2TP, IPSEC)


Power saving(Green technology)

64/128 bit WEP Encryption

WPA Personal (WPA-PSK using TKIP or AES)

WPA Enterprise (WPA-EAP using TKIP)

802.1x Authenticator

Hide SSID in beacons

Wi-Fi Protection Setup (WPS)


ACL control

Best Channel selection

Speed/Bandwidth monitor



Application base

- Priority Queue

- Bandwidth Allocation


Configuration Web-based configuration (HTTP)

Firmware Upgrade Via webpage upgrade

Auto recovery if firmware upgrade fails

Administrator Setting Administrator password change • Idle time out

Reset Setting Reboot • Reset to Factory Default

System monitoring Speed and bandwidth monitoring

Scheduling Enable Firewall • Enable power saving

Easy Access User can type model name and access the main page

Install wizard Guides user to set-up router smoothly

Environment & Physical

Temperature Range
Operating: 0°C to 45°C (32°F to 113°F)

Storage: -10°C to 70°C (14°F to 158°F)
Humidity (non-condensing) 15% – 95% typical