The 1769-L33ER CompactLogix 5370 controller by Allen-Bradley is a compact Logix controller. The 1769-L33ER can communicate with the controller or other devices through the Ethernet port. This controller has built-in user memory of 2 MB. It is packaged with an optional non-volatile memory card which amounts to 1GB, thay may be expanded up to 2GB. The 1769-L33ER can support Sixteen (16) I/O modules with a maximum of Three (3) I/O banks connected by appropriate expansion cables. The 1769-L33ER has a draw current of 5 Volts DC at 560 mA across 4 power supply modules and has a maximum power dissipation of 4.5 Watts. It has a 500 mA @ 5VDC backplane current draw and a maximum bus insulation 30 Volts. The 1769-L33ER can be mounted using either a DIN rail or panel mounting. The 1769-L3ER CompactLogix controller has an average weight of 0.31 kilograms (0.68 pounds) and comes with an open-style enclosure. It is an Electronic device with an operating temperature range of a 0 to 60 degree Celsius (32 to 140 degree Fahrenheit) and a -40 to 85 degree Celsius (-40 to 185 degree Celsius) storage temperature, with a maximum relative noncondensing humidity range between 0 to 95%. This unit can be used with several different power supplies, such as the 1769-PA4, the 1769-PA2, and the 1769-PB4.