1. 2 in 1: Smoke detector with temperature and humidity sensor, not only can detect smoke, but also measure temperature and humidity. Temperature and humidity curves, record temperature and humidity changes on the APP, and present them to you in graphics. Let you know the latest data changes more intuitively. 2. Smoke Alarm: 80dB(A) alarm sound, when the temperature reaches 60 degrees, the smoke reaches a certain value. Trigger an alarm, let people react in time, and deal with it quickly. High temperature alarm push, automatic alarm when it is higher than 60 degrees, and the mobile phone will prompt the alarm. Mobile APP alarm push, let you hidden dangers and economic losses. 3. Features: The smoke detector reminds the dangerous smoke concentration in time, rid of potential danger and economic loss. WIFI Bluetooth - Compatible with 2 connection methods, can connect to faster. Connecting to a network is 2x faster than using only Wifi. 4. Function: Low battery reminder, when the battery is lower than 20%, it will automatically send a message reminder to facilitate timely battery replacement. Sharing function, share with family members for joint control. With the group function, you can turn off or turn on the group devices together, which is more convenient. When the battery is 20%, a message will be automatically pushed to remind you to replace the battery in time The temperature is higher than 60 degrees automatic alarm, the phone will prompt the alarm Record temperature and humidity changes on the app and present them to you in a graph WIFI + Bluetooth 2 kinds of connection Can detect smoke and temperature and humidity Colour:White Material:plastic Size: 9 x 9 x 4cm Package Contents: 1 x alarm(Need 2 x AAA batteries, no include) Only 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.