# Class TSignalEventDefinition OptimaJet.Workflow.BpmnPlugin.Model.TSignalEventDefinition Namespace: [OptimaJet.Workflow.BpmnPlugin.Model](https://api.workflowengine.io/bpmn-plugin/OptimaJet.Workflow.BpmnPlugin.Model/) ```csharp public class TSignalEventDefinition : TEventDefinition ``` ## Type Hierarchy - [TBaseElement](https://api.workflowengine.io/bpmn-plugin/OptimaJet.Workflow.BpmnPlugin.Model/TBaseElement/) - [TRootElement](https://api.workflowengine.io/bpmn-plugin/OptimaJet.Workflow.BpmnPlugin.Model/TRootElement/) - [TEventDefinition](https://api.workflowengine.io/bpmn-plugin/OptimaJet.Workflow.BpmnPlugin.Model/TEventDefinition/) - TSignalEventDefinition Current type ## Properties `public XmlQualifiedName SignalRef { get; set; }` [Previous TSignal](https://api.workflowengine.io/bpmn-plugin/OptimaJet.Workflow.BpmnPlugin.Model/TSignal/) [Next TStandardLoopCharacteristics](https://api.workflowengine.io/bpmn-plugin/OptimaJet.Workflow.BpmnPlugin.Model/TStandardLoopCharacteristics/)