4-in-1 Ring Plug in Smoke & Carbon Monoxide Detectors Combination Built-in 1000mAh Backup Battery Plug&Play&Audible 85dB Smoke CO Temp Humidity Senor for Home Hotel Travel (White, 1 Pack) Dreamall Provide extra protection for your

Provide extra protection for your wire

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4-in-1 Ring Plug in Smoke & Carbon Monoxide Detectors Combination Built-in 1000mAh Backup Battery Plug&Play&Audible 85dB Smoke CO Temp Humidity Senor for Home Hotel Travel (White, 1 Pack) Dreamall Provide extra protection for yourAbout this item Plug&Play (Compatile with 110 240V US outlets) HAKINAKU 4 in 1 CO & Smoke detectorsAll in 1 combination detectors Integrated carbon monoxide, smoke,temperature and humidity sensors, real time to detector and enhance the home environment gas safety for us. Plug in&Play designCompatible with 110V to 220V AC US standard outlets. Just Plug in and the CO & smoke combination detector will real time work all day. Easily enhance safety in