Siemens 3RK2400-1BT30-0AA3 Compact AS-I Digital I/O Module, 2 Inputs, 2 Outputs
Siemens AS-I Digital I/O Module, Compact, 2 Inputs, 2 Outputs, 24 VDC, 1 A, Screw Terminal, -25 to 70 deg C, 108 mm H x 20 mm W x 45 mm D Dimensions