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Source 2 in 1 Smoke Heat Alarm directly from Wanlin Fire, a leading Chinese manufacturer of NB-IoT Smart Smoke Detector. Product highlights: NB-IoT ultra-low-power, 8-year battery life, daily heartbea

Multisensor Fire Detector direct from Wanlin Fire Protection — 12-year factory experience, WL-SM600 fully certified CE/EN54/FCC/RoHS. Key specs: 4G Cat.1 wireless, 10s alert push via APP/SMS/call, 3-y