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The Allen-Bradley 1756-L1M3 is a robust ControlLogix 5550 controller, offering 2 Mb of user memory and 150 kb of I/O memory, designed without nonvolatile memory or an enclosure. It operates with a peak backplane current of 1.20 Amps at 5.1 Volts DC, featuring an efficient power dissipation of 5.4 Watts and capable of withstanding challenging environments, with an operating temperature range of 0 to 60 degrees Celsius and a relative humidity tolerance from 5% to 95%. The controller also ensures reliable performance under stress with a vibration tolerance up to 2.0 G, a shock resistance of 30 G for operation, and immunity to ESD and RF interference, making it ideal for demanding industrial applications.