Circuit Design, Inc, the leading designer and manufacturer of radio devices (Head  Office: Nagano Japan), has started production of the STD-502-R, a radio transceiver module for control of industrial machinery. The STD-502-R operates in the 2.4 GHz band used worldwide and complies with the ARIB, CE, and FCC standards in Japan, Europe, and the U.S. 

Designed to be embedded in equipment, the STD-502-R was developed as a radio module for industrial applications that require reliable operation. With battery operation, it achieves line of sight radio communication beyond 300 m.

Besides using highly noise-resistant direct-sequence spread spectrum (DSSS) modulation, the module has a true diversity receiver function for preventing signal dropout due to multi-path fading. This ensures highly reliable radio communication in the congested 2.4 GHz ISM band.

The module itself has no built-in communication protocol. Instead, it has a transparent data input/output interface, enabling users to employ their own protocols without modification. In addition, it can continuously transmit a LOW or HIGH signal without restriction, which was not possible with earlier models.

Circuit Design developed its own ASIC with DSSS modulation and a true diversity function in order to guarantee the long-term supply of key radio components required for industrial devices. Therefore, the STD-502-R is not reliant on components from other companies for its main functions.

Circuit Design already offers the STD-302N-R and LMD-400-R transceivers that cover the 300 MHz to 1,200 MHz frequency bands of various countries. With the addition of the STD-502-R transceiver for the 2.4 GHz band, we have established a product portfolio that meets diverse requirements around the world.  

Full press release on the WEB     |      Data sheet of the STD-502-R (PDF)  

The technical features of the STD-502-R are as follows.      

RP-SMA RF connector

Applications   

Industrial measurement systems

Industrial radio transceiver product portfolio