Door & window contacts
The first line. Every exterior door and accessible window gets a contact that triggers the instant it opens.
Home / Systems / Intrusion Detection
When seconds matter
Someone's trying
to get in.
You'll know first.
Layered sensors on every entry point. Alerts to your phone or a monitoring station. No blind spots.
We install and support
How it works
Breach to response
in seconds.
1
Sensor trips
Door contact, motion detector or glass-break sensor catches the intrusion.
→
2
Panel verifies
The alarm panel confirms it's real—not a pet, not a draft, not a false trigger.
→
3
Alert fires
Siren sounds on-site. Push notification hits your phone instantly.
→
4
Response
You check cameras, dispatch police, or let the monitoring station handle it.
Layers, not just a siren
Detection at
every entry point.
One sensor isn't a system. We layer different detection types so a breach is caught early—not after someone's already inside.
Motion detectors
Pet-immune PIR sensors cover interior spaces. If someone gets past the perimeter, motion catches them.
Glass-break sensors
Acoustic sensors that hear the specific frequency of breaking glass—covering windows without a contact on each one.
Environmental
Smoke, CO, water and temperature sensors. Because threats aren't always human.
Monitoring options
Who responds
when you're not there?
An alarm that nobody hears is just noise. Pick the response model that fits.
Self-monitoring
Alerts go straight to your phone. You see what's happening, check cameras and decide—call police, call a neighbor, or stand down.
Best for: owners who are nearby and responsive
Professional monitoring
A UL-listed central station watches 24/7. They verify the alarm, call your contacts and dispatch police if needed.
Best for: after-hours, multiple locations, insurance requirements
Common questions
Intrusion Detection FAQs
Is professional monitoring available?
AST can configure systems for professional monitoring, with procedures based on your contacts and response plan.
What about false alarms?
Thoughtful sensor selection, placement and training reduce the most common causes of false alarms.
Wired or wireless sensors?
Both have a place. Wired is ideal during construction; modern wireless can be effective in existing buildings.
Can I control the system from my phone?
Many current systems support authorized mobile arming, disarming and status review.