APP Remotes Viewing: After connect with your mobpilephone APP correctly, you can view the data on your mobilephone easily, wherever you are.Built-in capacity rechargable lithium battery to supplys , and you can recharge it in time. Display: color screen allows you to browse the data more clearly, makes it more convenient for elderly and children, giving you a better experience.Wide Applications: This detector is suitable for indoor quality detecting, and can be widely used in your home, living room, bedroom, office and other places.Model Number: WiFi Quality DetectorWith LCD Screen Or Not: YesIs Smart Device: YESGas Type: Multifunctionalcolor:BlackMaterial:plasticPackage Contents:1 x Carbon Dioxide Detector1 x USB Cable1 x English ManualOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.