Install the sensor at the front of the Rack is therefore exposed to the cold air directly and cause Alarm and Email Alarm set Alarm and sent 3 minutes continuously until the Alarm is usually normal.
Sensors installed in front of the Rack is directly exposed to the cold air and the Alarm and Alarm Email Alarm set for 3 minutes, and will continue until the Alarm is normal.
The sensor installed in front of Rack is in contact with the cold wind directly and Alarm Email Alarm and set 3 minutes, send Alarm and will forward because until. Alarm is normal.