IQ QS5519-840 Wireless 319.5MHz Heat Detector

Designed for reliable alarm performance in commercial security and life-safety systems, the IQ QS5519-840 Wireless 319.5MHz Heat Detector from IQ delivers dependable heat sensing without the need for new cabling. This wireless heat detector combines selectable fixed-temperature operation (135°F / 57°C or 200°F / 93°C) with a rate-of-rise detection of 12–15°F (6.7–8.3°C) per minute so you can tailor detection to kitchens, mechanical rooms or storage areas to reduce nuisance alarms and improve event accuracy.

Operating on a crystal-controlled 319.5 MHz link, the QS5519-840 integrates smoothly with wireless security and monitoring platforms for fast, scalable deployments. Its compact enclosure and wide humidity/temperature tolerance make it suitable for a range of surveillance and fire-monitoring applications. Ideal for retrofit projects and new installations alike, the unit replaces QS5517-840 and QS5518-840 models for a straightforward upgrade.

Specify the IQ QS5519-840 for projects that demand reliable thermal detection in wireless security and monitoring systems. Contact us to order or to discuss system integration and placement recommendations.

• Fast, wireless integration: 319.5 MHz transmitter enables quick installation into existing security and monitoring networks without new wiring
• Dual-mode detection for flexibility: selectable fixed temperature (135°F or 200°F) plus rate-of-rise sensing for dependable fire detection in varied environments
• Reliable, low-maintenance operation: electronic processing reduces nuisance alerts and provides consistent performance in ceilings up to 100°F/150°F
• Compact, unobtrusive design: small footprint simplifies placement in commercial and industrial surveillance installations
• Backwards-compatible model replacement: direct upgrade path from QS5517-840 and QS5518-840 to minimize system downtime