Product Features:Input voltage: DC4.5V LR03*3(Factory does not include battery)Quiescent current: 30uALow power undervoltage: 2.7VWiFi: 802.11b/g/n 2.4GHzWorking temperature: -20~60Working humidity: 10%~90%RH1. High and low temperature alarmIf no operation is performed for more than 1 minute, the device will go to sleep. You need to press the "OK" key to trigger the device to set high and low temperature alarms from the APP.2. Smart LinkageYou can preset the condition and task in the"Scene" page, for example, when the room temperature surpass 30 Celsius, the A/C will turn on automatically.3. Temperature Unit SwitchYou can switch the temperature unit between Fahrenheit and Celsius in the set.then press the reset button once, it will sync both on the screen and in the APP4. Temp & humidity recordsYou can view the historic data of temp and humidity stored for 1 year, and export fo your Email address5. Temp & humidity AlarmYou can preset the range for temperature and humidity in the scene page, when the temperature or humidity reaches the range it will push instant alarm message via APP.The device will make an alarm sound6. Low battery AlarmWhen the battery power is low, it will pushalert message via APP7. Third-party Voice ControlSupport enquiring about temp and humidity via Amazon and Google smart speaker by voice.8.Time/DateShow time and date after connected with internet.About Displaying1. The time format cannot be changed.2. The temperature unit can be switched.About Bluetooth FunctionBluetooth function is only useful during configuration. After configuration, the device will shut down the Bluetooth network.About the update frequency of temperature and humidity1. We used the trigger mechanism When the temperature or humidity change reaches the trigger condition, report the data immediately The fastest update frequency is 3 minutes.2. The sensor cannot set the update frequency,3. alarm function is set on the APPIf you need to update data in real time, please purchase a USB powered version.About Network TestingThe network will consume a lot of powerTo ensure the service life of the battery, the sensor will stop using the network when it does not need to report dataTherefore, it is meaningless to test the network signal of sensors in APP.Error on temperature and humidity1. All temperature and humidity sensors will have certain errors, please noteThe error of this sensor is 1 and the error of humidity is 5% RHAny value within this range is normal2. Sensor error and manufacturing process will lead to certain errors between products of the same model3. According to Newton's third law, the heat conduction takes a certain time.Therefore, our sensor needs 30 minutes to be consistent with the room temperature, and the measurement will be accurate.About Historical Curves1. The minimum granularity of historical data (daily chart) is 1 hour, and the minimum granularity of exported data is also 1 hour2. The value of historical data is the average value, that is, the average value in a minimum granularity timeSupport for third-party smart speakers1. Because the third-party smart speakers (Google Home/Amazon Alexa) do not have control panels corresponding to temperature and humidity sensors, the temperature and humidity may not be displayed normally on the third-party smart speakers' APP. But we have opened the voice query function.Therefore, the current temperature and humidity can be queried by voice2. Route or automatic process related to temperature and humidity cannot be established on the third-party smart speakers3. The device does not support Yandex AliceAbout AutomationThe sensor uses the principle of Edge TriggeredThat is, the action can only be triggered if the condition crosses the set conditionFor example, when the automatic setting temperature is greater than 25 , then turn on the air conditioner.1. When the temperature rises from below 25 to 25 , the automatic process can trigger to start the air conditioner2. After the automatic process is set, the temperature is always above 25 , and the air conditioner is not turned on.3. When the temperature drops to 25 and rises to above 25 , the automatic process will be activated.For example, when the automatic setting temperature is less than 20 , turn on the air conditioner1. When the temperature drops from above 20 to 20 , the automatic process can trigger to start the air conditioner2. After the automatic process is set, the temperature is always below 20 , and the air conditioner is not turned on3. When the temperature rises to 20 and then drops to above 20 , the automatic process will be activated.