Plug in & Play design. US standard plug is compatible with 110V to 220V AC outlet. Fits all US standard AC outlet in bedroom, kitchen, living-room, basement, hotel room, etc. Just Plug in and the detector will real-time work all day. Built-in 2000 mAh emergency Backup battery. Provides 18-20h working time, helps to cope with sudden power outages. Rechargable lithium battery design, Compared to other disposable batteries, we can help you save a lot of battery replacement costs. 2.1'' HD Screen. All the datas real times and dynamically show on the HD screen, we can read the data faster from the big icons. Provide professional technical support. Pls let us know if you met any technical issues, we will help solve it in 12 hours.
