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solar farm smoke detector
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UL 521 heat detector for Bulgaria Buyers: Smart Fire Safety ···
UL 521 heat detector f···
2026-09-01
Wanlin Fire - China source manufacturer for UL 521 heat detector. Featured model WL-TH-PNL (Fire Alarm Control Panel): Conventional panel, 8 zones x 25 detectors; Zone threshold programmable 3-15 mA per zone; 4 sounder circuits 24V 1.5A each + fire + fault relays; 0 to +50 deg C, 10-93% RH. Full lineup: smoke and heat detectors, CO and gas detectors, MCPs, s···