By the way, if you like our store, Please add our store to your Favorite Stores, You can get our New arrival and Discount information in time ? Description: WiFi smoke sensor sensitively detects smoke, an indoor fire prevention necessity ?Sensitive smoke detection and high-pitched alarm? The detector's induction of smoke mainly consists of a set of infrared emitting tubes and receiving pairs of tubes. When smoke and fire hazards are detected, an audible alarm of up to 85db will be issued with the red flashing of the LED light and sent to the mobile APP to protect the safety of the whole family. ?Remote Alarm? The danger situation at home is timely informed of the mobile phone APP remote monitoring. Once the smoke concentration is too high, the smoke alarm will immediately alarm, and the APP will be connected in parallel to send an alarm prompt. No matter where you are, you can receive the message as soon as possible. Not ""burned"". ?Low battery reminder and remote mute function? You can check the battery status of the alarm at any time by opening the APP. Low power consumption, long standby time, no need to replace the battery frequently. At the same time, when the detector is in an alarm state, the remote mute function can be realized through the APP. ?Pick-and-use, easy and convenient? No tools are needed, just a piece of glue, you can stick the smart smoke alarm in the right place. ?Regular button self-checking, sound and light prompts failure? Press the self-inspection button to perform periodic self-inspection to ensure the normal operation of the alarm. Specifications: ?Product name? WiFi smoke sensor ?product size? 51*55mm ?Wireless connection? 2.4G WiFi ?Working current?Alarm current?120mA ?Battery life?More than 3 years ?Working temperature?-10°C~+55°C ?Low battery alarm?2.7V±0.1V ?Communication distance? More than 50 meters in an open space Package Included: 1*smoke sensor