Will the alert noise stop after a designated amount of time?

Hi Tommy, Great question and thank for reaching out to us regarding our 120-Degree Passive Infrared Security Motion Detector. The siren will sound for 30 seconds (unless disarmed by the remote) and then turn off. In 15 seconds the alarm will check for motion. If motion is detected, the siren will sound again. The cycle will repeat until the unit is disarmed with the remote. If you have any further questions, please don't hesitate to respond or contact our Customer Support through phone or email. Thank you, Jasco Products Tech Support (Manufacturer).