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Sumring Fire Control System Heat Detector 2-Wire Detector Heat for Fire Alarm. 2-Wire Wiring System: Simplifies installation with standard 2-wire connection compatible with conventional panels. CE and RoHS Certified: Meets international safety and environmental standards for fire alarm signaling systems. OEM and ODM Services: Customization options available for branding and specific product requirements. Fast Response Time: Designed for rapid detection of smoldering to flaming fires with reliable signaling. Flexible Shipping Options: Supports express, sea, and air delivery with global logistics partners.