Featuring expandable design for assembly applications, Model XS26-2 monitors numerous input devices, including e-stop buttons, rope pulls, interlocked guards/gates, optical sensors, and safety mats. Base controller offers 26 inputs and 2 dual safety outputs, allowing user to connect safety devices to single controller instead of multiple relay modules. Supplied in 45 x 110 mm DIN rail housing, controller accepts up to 8 optional expansion modules to monitor up to 128 I/O devices.