Here are some tips to help you remain safe when you respond to an intrusion alarm. 1. Call for back-up. 2. Observe the area from a safe distance until back-up arrives. 3. Check the perimeter of the property, looking for signs of forced entry. 4. If there is a sign of illegal entry, stay back and call the police. 5. If there is no sign of illegal entry, enter the building with your back-up, and check the system for the alarm source. 6. Reset the alarm when it is safe to do so. 7. Fill out a complete report. If the alarm system is not working properly, make sure you report it, so that it can be fixed immediately.