R911307550 is part of the MTS Servo Control Modules Series by Indramat Controls.
Power Source: 24 VDC Current Consumption: 0.5 A Memory: EPROM (to be ordered separately) Serial Interfaces Power: 250 mA Supply Voltage for Serial Interfaces: 4.5 - 5.5 VDC Maximum Racks: 4 IP rating: IP 20 Operating Temperature: 0 to +50 degree Celsius Maximum Altitude: 1500 meters without reduction in data Storage Temperature: -25 to +70 degree Celsius.