Wireless smoke detectors 10 year battery SR-851W(I)

This Sumring wifi+ wireless smoke detectors 10 year battery SR-851W(I) features wireless interconnectivity. Powered by a 10-year battery that lasts the life of the alarm, no battery installation or replacement is necessary. An "end of life" warning will alert you when it is time to replace the entire unit.

we recommend wireless smoke detectors 10 year battery SR-851SI4  with hush button/WIFI function alarm in a comprehensive whole-home fire-protection system. Intelligent wireless smoke detectors 10 year battery SR-851W(I) offer a wire-free interconnected network that offers whole home protection. With wifi function and wireless Interconnection, when one alarm detects smoke, all units are alerted via a wire-free network to the smartphone. Powered by Lithium Battery Operated with Ten (10)-years of protection

This EN14604:2005/AC:2008 wireless smoke detectors 10 year battery SR-851W(I) comes in a two-pack, and the units (and any additional ones) can interconnect so that if one sounds, they all sound, which can give you additional time to identify the problem and evacuate. This wireless-connection setup is external to the alarms and require a phone app（such as smart life or Tuya APP）. You can also designate each unit by location, so if an alarm is tripped, all of them indicate which room the hazard is originating from. 

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