These Programmable wireless GSM temperature thermostats are used for
remote temperature reporting and heating or air conditioning control.
Applications include PC server bank monitoring, IT system protection,
warehouse environments, food and agricultural environmental off limit
warnings.
When this thermostat is enrolled you can track the temperature
and also operate a heating or cooling system.
If the temperature is too low or too high the GD04 sends a warning SMS message
allowing you to take action or a relay to be activated to correct the
temperature.