Modbus Communication ModuleThis slave module can be used with 24Vdc powered modular smart relays (types SR3 BxxxBD) in addition to any I/O extension fitted.Addresses available are 0-2474 inputs, 4 outputs and 4 parameter bitsSchneider Electric Zelio Logic 2 Smart Relay - Additional Info:Schneider Electric now offers a new generation of expandable intelligent relays, offering substantial advantages in flexibility and functionality. Zelio Logic 2 Smart Relay is the optimum solution to control tasks such as automating small machines within industry, lighting, HVAC and access control within buildings.With the small footprint, simple programming, powerful control functions and the possibility of changing or modifying the program in case of changed application requirements, it offers great savings in space and price compared to other options.Choose between two new series - Compact and Modular. The Compact series is not expandable and is available with the following I/O block sizes: 10 I/O, 12 I/O and 20 I/O.The Modular series is available with 10 and 26 I/O basic units and is expandable up to 40 I/O with the latter. Apart from this flexibility both new series are programmable using FBD, ladder and Grafcet SFC programming languages.User friendly design for easy programming and operation, either directly from the module using the navigation buttons or via Windows based software.