SDi SOLO423 Patch Cable

Designed for fast, safe field testing, the SDi Fire Solo423 heat detector tester puts reliable activation and extended reach in the hands of service technicians. This corded heat detector tester supports fixed-temperature, rate-of-rise and combination detectors up to 194°F / 90°C, delivering some of the quickest activation times to reduce on-site downtime and speed routine maintenance. The universal head fits the widest range of detectors used in commercial security and surveillance systems, while the supplied 5 m (16') cable lets teams test at height or awkward angles without repeated ladder moves.

Built with practical site use in mind, the Solo423 is lightweight and easy to handle for repeated inspections across monitoring, fire alarm and building management programs. Its wide voltage compatibility (110–240 VAC models available) makes it suitable for international service fleets and mixed-voltage facilities. Whether you’re commissioning new installations or performing scheduled fire safety checks, the SDi Fire Solo423 streamlines detector testing and improves technician safety. Order the Solo423 to simplify your fire detection testing workflow and keep your security and monitoring systems fully operational.

• Rapid, reliable activation cuts inspection time so maintenance teams can test more detectors per shift
• Universal head and wide compatibility reduce the need for multiple tools across fixed, rate-of-rise and combination detectors
• 5 m (16') cable gives safe, extended reach for testing at height without constant ladder repositioning
• Lightweight, corded design improves ergonomics for prolonged use and reduces operator fatigue
• Accurate testing up to 194°F / 90°C ensures confidence in fire detection systems and compliance with service protocols