The STI Sensors have a reset time built into them to avoid multiple alarms back to back. If you are testing the unit and the sensor is open you should be able to hear it “ticking” during and after each activation. The sensor will not send another alarm signal until this ticking done.
Canceling the Alarm Call-Out during a call from the FreezeAlarm: When the FreezeAlarm calls you, you will initially hear either the factory recorded alarm message or your custom alarm message that you recorded during the programming section. Hello, this is your Automated Monitoring System. (Or you will hear your custom alarm message that was recorded [...]