sensor life monitoring

fire alarm email support — Wanlin, 12-year Chinese smart fire protection manufacturer, WL-SFP800 (Smart Wireless Interconnected Alarm System) certified UL/FM/CE/EN54/NFPA 72. RF Mesh + Self-Healing + 24 Detectors + 4G Gateway + Voice. OEM/ODM from 500 units, factory direct pricing 50-70% below Western brands, 60+ countries.