Answer:
The detector features an integrated external volt-free changeover alarm relay output (Form C dry contacts), enabling direct switching signals for third-party systems such as access control door releases, HVAC dampers, or intrusion dialers.
Unlike standard 2-wire zone-powered detectors that indicate fire purely via zone current draw changes, the KTI07009001ASWB incorporates an external volt-free changeover alarm relay output. When the optical chamber detects combustion aerosols, the relay changes contact state.
This hardware configuration is essential for industrial automation and facility safety interfaces where an auxiliary dry contact is required to automatically trigger:
- BMS (Building Management System) monitoring points
- Magnetic fire door release power cut-offs
- HVAC ventilation shutdown and damper controls
- Burglar and intruder alarm panel auxiliary input zones
