[Problem]: The IOT105 is used to set the high and low limits of the alarm. The alarm is always on when the power is turned on, but the current value of the received alarm message is within the normal range. 

[Solution]: Setting the high and low limit of the device alarm value, input it according to 10 times of the actual value. (See page 15 of the manual for details.)

[Problem]: With the IOT series (SensorToCloud), the buzzer will always be alerted. What is the problem? ?
[Answer]: The buzzer will sound when the DIN switch input, AIN analog input, DS18B20 temperature input, AM2301 temperature and humidity input type. (See page 7 of the manual for details.)