Frequently Asked Questions

What is 802.11 ac,a,b,g,n?

IEEE 802.11 is a set of media access control (MAC) and physical layer (PHY) specifications for implementing wireless local area network (WLAN) computer communication in the 900 MHz and 2.4, 3.6, 5, and 60 GHz frequency bands. They are created and maintained by the Institute of Electrical and Electronics Engineers (IEEE) LAN/MAN Standards Committee (IEEE 802). The base version of the standard was released in 1997, and has had subsequent amendments. The standard and amendments provide the basis for wireless network products using the Wi-Fi brand. While each amendment is officially revoked when it is incorporated in the latest version of the standard, the corporate world tends to market to the revisions because they concisely denote capabilities of their products. As a result, in the market place, each revision tends to become its own standard.

The 802.11b standard has a maximum raw data rate of 11 Mbit/s, and uses the same media access method defined in the original standard. 802.11b products appeared on the market in early 2000

In June 2003, a third modulation standard was ratified: 802.11g. This works in the 2.4 GHz band (like 802.11b), but uses the same OFDM based transmission scheme. It operates at a maximum physical layer bit rate of 54 Mbit/s

802.11n is an amendment that improves upon the previous 802.11 standards by adding multiple-input multiple-output antennas (MIMO). 802.11n operates on both the 2.4 GHz and the 5 GHz bands. Support for 5 GHz bands is optional. It operates at a maximum net data rate from 54 Mbit/s to 600 Mbit/s. The IEEE has approved the amendment, and it was published in October 2009.

IEEE 802.11ac-2013 is an amendment to IEEE 802.11, published in December 2013, that builds on 802.11n.[18] Changes compared to 802.11n include wider channels (80 or 160 MHz versus 40 MHz) in the 5 GHz band, more spatial streams (up to eight versus four), higher-order modulation (up to 256-QAM vs. 64-QAM), and the addition of Multi-user MIMO (MU-MIMO). As of October 2013, high-end implementations support 80 MHz channels, three spatial streams, and 256-QAM, yielding a data rate of up to 433.3 Mbit/s per spatial stream, 1300 Mbit/s total, in 80 MHz channels in the 5 GHz band. Vendors have announced plans to release so-called "Wave 2" devices with support for 160 MHz channels, four spatial streams, and MU-MIMO in 2014 and 2015.

Reference : https://en.wikipedia.org/wiki/IEEE_802.11

Does Wi2Wi support BT 4.1 and 4.2? What is the difference in Bluetooth 4.1 and 4.2?

Wi2Wi has different modules which support 4.1 and 4.2 (4.2 supported in combo version) 4.1 in BT module. Please look at modules in our website.

WM828CC6 : Multi-Protocol Wi-Fi+BT+BLE Module
WC7220B0 : Standalone Bluetooth Smart Module

Compared to 4.1 4.2 has the listed features below:

  • LE Data Packet Length Extension
  • LE Secure Connections
  • Link Layer Privacy
  • Link Layer Extended Scanner Filter Policies
  • IP connectivity for Bluetooth Smart devices to become available soon after the introduction of BT v4.2 via the new Internet Protocol Support Profile (IPSP).
  • IPSP adds an IPv6 connection option for Bluetooth Smart, to support connected home and other IoT implementations.

Can AP and Station work simultaneously?

Yes, with our WM825B00 and WM828CC6 modules user can run AP as well as Station mode simultaneously.

Can Wi-Fi and Bluetooth work simultaneously?

Yes, with our WM828CC6 module.

What is the difference between "Maxmimum Performance" and "Embedded" Modules?

Maximum performance Modules requires a operating system like Linux or Android running on a processor like Freescale i.MX, TI OMAP, etc...

Embedded Modules does not need operating system and a processor, It just needs a small MCU to run the HOST API's to control the module.

Does "Maximum Performance" Modules need Operating System? If so why?

Yes it requires an Operating system because the Wlan Stack, TCP/IP is not inside the module, Is has to be available on the Processor. And an operating system will definitely include all of it.

Embedded Modules does not need operating system and a processor, It just needs a small MCU to run the HOST API's to control the module.

What is 802.11ac?

IEEE 802.11ac-2013 is an amendment to IEEE 802.11, published in December 2013, that builds on 802.11n.[18] Changes compared to 802.11n include wider channels (80 or 160 MHz versus 40 MHz) in the 5 GHz band, more spatial streams (up to eight versus four), higher-order modulation (up to 256-QAM vs. 64-QAM), and the addition of Multi-user MIMO (MU-MIMO). As of October 2013, high-end implementations support 80 MHz channels, three spatial streams, and 256-QAM, yielding a data rate of up to 433.3 Mbit/s per spatial stream, 1300 Mbit/s total, in 80 MHz channels in the 5 GHz band.[19] Vendors have announced plans to release so-called "Wave 2" devices with support for 160 MHz channels, four spatial streams, and MU-MIMO in 2014 and 2015.
Refer: WM828CC6

What is the Wi-Fi module range?

There are so many parameters which influence the range f the Wi-Fi Module:

The Wi-Fi signal range depends on the frequency band, radio power output, antenna gain and antenna type as well as the modulation technique. Line-of-sight is the thumbnail guide but reflection and refraction can have a significant impact.

Our module is complaint to FCC norms and we support a transmit power of around 18dBm.

What is Serial to Wi-Fi module?

Serial to Wi-Fi module concept comes under our Embedded Module Family.

What are the certifications Wi2Wi has on its modules?

Most of the Wi2Wi parts are FCC, IC, CE certified. But if customer requires any other specific certification like TELEC, ANATEL, etc then we can provide certification assistance.

Click here to know current certifications offering: Certifications

Does your module support Antenna Diversity?

Yes we support Antenna Diversity on WM825B00 module.

What is antenna Diversity?

Antenna Diversity is a feature in which the module switches between 2 antennas to capture best wireless signals.

Do you have different temperature grade modules.

Yes we have different temperature grade modules.

Industrial (-40°C to +85°C)

Extended (-30°C to +80°C)

Commercial (0°C to +70°C)

What Data rates does you 802.11 ac module support ?

WM828CC6 Module

802.11ac/n Data Rates:
up to 86.7 Mbps for 20 MHz channel
up to 200 Mbps for 40 MHz channel
up to 433 Mbps for 80 MHz channel

What Kind of support can we as customer expect from Wi2Wi?

Wi2Wi believes in taking customers through production in a very small time to market .

At every time during the designing phase the customer can talk to designers and Application engineers in Wi2Wi for hardware, software, Certification and any kind of debugging and testing. Click here: Technical Support

What is the logistics support you have for all your parts?

We have distributors and local reps all worldwide who can help you with the logistics of the modules.

Please connect with our sales on This email address is being protected from spambots. You need JavaScript enabled to view it.

Where can I get the complete documentation for Wi2Wi products?

Click on Customer Portal where you can find all the documents and drivers. Please contact the sales and get your login access to this portal: This email address is being protected from spambots. You need JavaScript enabled to view it.