4g lte communication — Wanlin Fire, Chinese smart smoke detector manufacturer and exporter by Wanlin Fire Technology. WL-SD-500 photoelectric smart smoke detector with 4G LTE and NB-IoT dual-mode connectivity, 10-year sealed lithium battery, 85dB sounder, app/SMS/push alerts, remote cloud monitoring. EN 14604, EN 54-7, UL 217, CE, RoHS certified. MOQ from 10···
Source high-quality non-corrosive smoke test from Wanlin Fire Protection, China manufacturer. Global export, OEM/ODM services, competitive prices for wholesale buyers and distributors.