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4G alarm with multi tone siren
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NB-IoT alarm warning light with siren, Wireless Interconnect···
NB-IoT alarm warning l···
2026-07-13
NB-IoT alarm warning light with siren direct from Wanlin Fire Protection — 12-year factory experience, WL-SS105 fully certified EN 54-3/UL 464/UL 1971/CE/FCC/RoHS/REACH. Key specs: RF 433MHz Mesh + 4G LTE Backup, RF Mesh Networking + Synchronized Strobe, 3-year replaceable lithium battery (4x AA). MOQ 100 units, 25-30 working days, OEM/ODM custom branding a···