The ISaGRAF μPAC-5000 series (μPAC-5xx7, μPAC-5xx7D) is an enhanced version of palm-size μPAC. It provides ISaGRAF workbench for PLC user. Owing to the bigger and special form factor design, the μPAC-5xx7(D) can add an internal wireless module, such as 2G, 3G, ZigBee, Wi-Fi, GPS for different wireless application. The optional I/O expansion board, XW-board, is two times larger than the X-board of μPAC-7186 and provides high-protection I/O. 

For hardware expansion, it also supports an I/O expansion bus. The I/O expansion bus can be used to implement various I/O functions such as DI, DO, A/D, D/A, Timer/Counter, UART, and other I/O functions. Nearly all kinds of I/O functions can be implemented by this bus. But the bus can support only one board. There are more than 10 boards available for μPAC-5xx7(D) series, you can choose one of them to expand hardware features.