SMW240 is a DIP module, with 4 layer PCB design, integrated with Radio + programmed MCU in one chip, printed antenna and necessary passive components to complete a fully functional 2.4 GHz wireless module.

SMW240 is designed for short range (50 meters) RF communication applications with up to 62.5 kbits/sec data rate. It can be integrated to a wide coverage of applications very easily and quickly with almost no time spent on the development.

SMW240 has UART interface to communicate with the external peripheral. To ease the product design, add flexibility and support existing serial devices, it supports two modes of operation: Built-in Protocol Mode and Wireless RS232. Users can select one of these modes which one is the most appropriate for their design.

In Protocol Mode, wireless modules can be addressed, given network IDs. Each module can send to and receive from another addressed module within the same network ID. By properly designing the external microcontroller, it becomes possible to create networks and routers with this mode.

In the Wireless RS232 Mode, the module simply converts any incoming UART and Wireless data to each other. There are not any special commands and no control mechanism is required. Thus any incoming serial data stream (max 76 bytes packages) can be converted to wireless. This mode may be used to connect existing serial devices or products wirelessly without doing any design change (not guaranteed, may need modification on existing system), or can be used with systems where code space for control mechanism / protocol is not enough or the control mechanism / protocol is performed from external device or system. (E.g. PC software)