This very small size!
World's smallest level wireless module
A challenge to smallness that can be built into "anything".
KAGA FEI has extremely compact wireless modules in the line-up that you feel very small when you put it at your fingertip.
It is so small and can robustly connect.
Such valuable wireless modules lead your products into IoT world.
A small module with big potential
that connect your product to network.
With the advent of the ultra small modules, any products that haven't connected to network such as eyeglasses, shoes, toothbrushes, air-coditioned cloths, electric cigarettes, etc. have possibility to connect to network and to realize IoT conversion now.
Please see following advantages of the ultra small modules that can be mounted in any narrow spaces because of the extreme smallness.

In recent years, the numbers of products with wireless communication function, especially Bluetooth technology, is increasing yearly and the shipment is estimated to reach to 6.4B units in 2025. Such products include the ones that haven't related to electronics such as eyeglasses, shoes, cloths, etc. and a variety of companies, not limited to electronics companies, have been challenging to adopt wireless modules in their product and connect to network for creating new values and offering valuable services. KAGA FEI will resolve your issues together and support evolution of your new services.
Recommended for IoT
The reason why our ultra small wireless modules are selected.

Ultra small
The world's smallest class (3.25 x 8.55 mm) is realized.
It also has a built-in antenna and main clock, so it doesn't require any peripherals to achieve wireless function. All the necessary circuits are embedded in this module, so it can operate the radio if only power is supplied.
* This product can be mounted on a board with just a width of 6 mm. Its unique characteristic with capability to make the board thinner makes it possible to adopt on familiar thin devices such as electric toothbrushes.
Light weight
The module weighs less than 0.1 grams. With a smaller footprint and the use of shield mold technology *, it is lighter than metal shield module, and it makes it ideal for use in weight-sensitive products such as wearable, hand-held items and wearable devices. It does not make you feel that the wireless module is in.
*By sealing the module with resin and coating the surface with a metal layer, this technology eliminates the need of a metal shield.


Wide range of lineups
There are more than 20 types even only in Bluetooth modules. You can find module that is the best suited for your specifications, whether they're ultra-small, long-range, or rich in interfaces.

Implementation study
Use dimension drawings and CAD data for implementation considerations.- Outline dimensional drawing.

3D CAD data and dimensional information are available for you to study whether it can be implemented in your product.
There are various things that need to be confirmed when you decided to adopt the module into your product, such as whether it will fit in the product chassis, how thick the board will be after mounting, consideration of interference and positional relationship with other parts, consideration of routing of main PCB pattern, etc.
3D CAD data and outline dimensional drawing are available to assist in the stages of product specification review and designing.
Know the antenna radiation characteristics.


We offer antenna measurement service to achieve higher level of communication range and design at the same time.
Even if the wireless module is embedded into the product chasis, it is meaningless if the wireless connection is poor. The main board, housing resin, metal, and human hands existing around the antenna on the wireless module affect radio waves and affect the communication range of the product. In order to reduce the size of the product and make it easier for the radio wave to propagate, it is essential to consider the position of the antenna. Although there are ideal antenna orientations and mounting positions on the circuit board for providing sufficient radio performance, you can rarely implement under ideal conditions if the product shape is given priority. The antenna characteristics measurement service enables you to check the radio performance of your product or prototype with the wireless module.
Our technical support
Application example of wireless module
* The Bluetooth® word mark and logos are owned by the Bluetooth® SIG, Inc. and any use of such marks by KAGA FEI Co., Ltd. is under license.