security system meaning

security system expert direct from Wanlin Fire Protection — 12-year factory experience, WL-HK603 fully certified CE/EN14604/FCC/RoHS/REACH. Key specs: 4G LTE Cat.1 (primary) + WiFi (secondary) + RF 433MHz (mesh), AI multi-sensor fusion, 4G+WiFi dual-path, Panel: AC + 72h backup; Detectors: 10-year sealed; Sensors: 3-year battery. MOQ 100 kits, 25-30 working···