This artifact abstract is a guideline for SmartSPEC, a simulator for generating customizable smart space datasets using semantic models of spaces, people, events and sensors. SmartSPEC is based on two main components: (i) Scenario Learning which produces metamodels of events and people using input seed data; and (ii) Scenario Generation which uses SmartSPEC data to generate a realistic smart space dataset. SmartSPEC provides three modes of operation to generate synthetic data varying in the level of user involvement/automation.