as data is submitted to the web application, it will check the current humidity and temperature to see if they are in a safe range. (these checks occur in the logData.php script)

the current logic is as follows:

if($temp < 60 || $temp > 75) $sendEmail = 1;
if($humi < 60 || $humi > 75) $sendEmail = 1;
if($hw_failure==1) $sendEmail = 1;

if any of these conditions is met an alert will be sent to the email address registered in the web application user database.

only one alert email will be sent to prevent spamming. when you have taken care of the condition and wish to resume receiving alerts, you can log into the web application or use the phone app to clear the alert. in the web application you will need to enter your API key to modify the database record.