Bakeey Independent Smoke Sound and Light Alarm Wireless WIFI Sensor Tuya Smart Life APP Remote Push

*Warm Reminder: Auto standby when no trigger happen after 3 minutes. After your device detected the capacity exceed the standard index.residual gas maybe left inside the sensor that cause deviation under the static state. Instruction for Installing: 1.Press -fest- button on device for 6 seconds and release, when indicator led will be fast flashing. Go to the App, press ',then go to category of "Sec-urity 8. Sensor" press "Sensor (WiFi) ,and add this device accordingly. 2.When install in wall. it will be rnore convenient by using hanging holes: fix screws on wall firstly and then hang the Alarm there. 3.When install on ceiling, use installing holes: with screws insert into the holes, along-with the base of Item, fix tightly on the ceiling. Other parts of the Alarm will be spin tightly to the base accordingly. 4.Not to install the Alarm near the air exit, air exchanging fan. room door and any places with more wind flowing volume. 5.Not to install the Alarm at any place where can be sprayed by water. 6.Suggestion: in each roorn, for every 25-40 square meters area, install 1 pc of Detector. And for inportant equipment, 0.5-2.5M abive from it, install 1 pc of Detector. Features: 1. Work independently.host is not required. 2. Quick response 3. Sensitive response 4. On-site audible and visual alarm 5. App remote push ring notification 6. This device can detect capacity of Alcohol,Smoke,Isobutane,Methanal etc harmful gases. Specifications: Brand: Bakeey Wireless: 2.4GHz WIFI Measurement Method: preheating type Measurement Mode: automatic Alarm Mode: sound and light/mobile phone APP Power Supply: 3 AA dry batteries 4.5V/USB 5V 500MA power supply (Battery is only used for emergency backup) Package Included: 1 x Smart Sensor 1 x Power Supply 1 x Mounting Screw Fittings 1 x Instruction Manual (English User Manual: https://drive.google.com/open?id=1_QqCqqoehbqqr-E_oMtfoI_Ti9mMLS0p )