Here are some key features and specifications of the AB 1734-SSI module:

It supports up to four synchronous serial channels for connecting SSI devices.

Each channel can be individually configured as an input or output.

It can handle data transferred at speeds of up to 1 Mbps.

The module uses Allen-Bradley's proprietary backplane communication protocol for seamless integration with other devices in the 1734 POINT I/O system.

It is designed for installation in a 1734 I/O rack, which can be connected to a compatible Allen-Bradley programmable logic controller (PLC) or other control system.

To use the AB 1734-SSI module, you would typically configure it using the manufacturer's software, such as the RSLogix 5000 programming environment, which allows you to specify the module's settings and create the necessary program logic to control and monitor the connected SSI devices.