SDi DS-1 Disconnect Switch

Ensure safe, efficient maintenance of fire detection systems with the SDi Fire DS-1 Disconnect Switch — a purpose-built tool for heat detector testers and routine service. The DS-1 lets technicians isolate individual heat detectors quickly, protecting sensitive monitoring and control equipment while preventing nuisance alarms during testing. As an SDi Fire product (Manufacturer Part Number DS-1), it’s designed for low-voltage fire alarm circuits and offers a compact footprint for easy surface or flush installation in tight panels and junction boxes. Clear isolation indication speeds troubleshooting and documentation, helping security, surveillance and facilities teams stay compliant and minimize system downtime. Built for commercial and industrial environments, the DS-1 combines simple operation with robust construction to withstand frequent use on service routes. Ideal for fire alarm contractors, building managers and security integrators who perform regular detector testing and maintenance. Add the SDi DS-1 to your toolkit to streamline detector servicing and protect critical monitoring infrastructure — order now or specify it for your next heat detector testing application.

• Safely isolate heat detectors during testing to protect your fire alarm circuits and reduce false alarms
• Simple, single-action operation and compact design for fast installation and minimal downtime
• Built for low-voltage fire alarm environments; compatible with heat detector testers and most alarm panels
• Clear visual indication of isolation status to streamline maintenance and compliance checks
• Rugged construction from SDi Fire for reliable field performance and long service life