Specifications: Parameter Specification Product Range Harmony (Control & Signaling - Smart Relay Accessories) Device Type Handheld Graphic Programmer / Display Terminal (for XY6M/ZB6M) Compatible Devices Harmony XY6M and ZB6M series smart relays (micro PLCs). Display Backlit LCD graphic display, typically with a resolution of 128x64 pixels or similar. Interface Navigation buttons (Up, Down, Left, Right, OK, Cancel, etc.) and function keys. Connection Via a dedicated programming/communication cable to the smart relay's programming port. Primary Functions • Ladder logic programming and debugging • Real-time monitoring (I/O, variables, system status) • Fault diagnostics and display • Data logging and trending (model and firmware dependent) • Use as a basic operator interface Power Supply Typically powered by the connected smart relay via the communication cable. Memory Internal memory for storing programs and configurations. Software Compatibility Also programmable via PC software (e.g., SoMachine or EcoStruxure Machine Expert - Basic), but this device offers a standalone, portable programming method. Package/Configuration The suffix "CTO" likely denotes a Customer Trade Order or Complete Kit (which may include the connection cable, protective case, etc.).