ElectricThe SR3B102BD is a 10 I/O, 24VDC transistor out controller from Schneider Electric's Zelio SR3 series. It is a compact, flexible and powerful programmable logic controller (PLC) intended for use in a variety of industrial applications. It includes two onboard relay outputs, four digital inputs, two analog inputs and four digital outputs, as well as a power supply status LED that allows for steady monitoring of the unit's operation. The SR3B102BD also boasts an easy-to-use online configuration and a battery-backed memory that retains programming even in the event of a power failure. It can also be interconnected with other Zelio SR3 systems, allowing users to extend their system and create larger, more complex solutions.