Businesses That Trust Technology One
Real businesses. Real properties. Real protection. Protecting Southeast Missouri businesses and churches since 2007.
π Shop with Confidence
β 30-Day Money-Back Guarantee
β Flexible 0% interest & $0 down options

Whether it's a delivery building, package box, gate, shed, barn, storage unit, or remote property entrance, the Alarm.com Cellular Access Sensor lets you know the moment it opens.
No Wi-Fi.
No power.
No complicated setup.
Just instant notifications delivered directly to your phone from almost anywhere cellular service is available.
π¦ Delivery Buildings
π¬ Package Boxes
πͺ Storage Buildings
π Equipment Sheds
πΎ Barns
π Hunting Cabins
π§ Jobsite Storage
π Gates & Entrances
π Remote Properties
β No Wi-Fi required
β Works almost anywhere with cellular coverage
β Instant open and close notifications
β Long battery life
β Full event history
β Easy DIY installation
β Professional support available
β Optional remote gate control capabilities*
*Compatible gate operator required
Waiting on an important package?
Mount the Alarm.com Cellular Access Sensor on your delivery building door and receive a notification the moment it opens.
You'll know your package has arrived without checking the driveway, looking out the window, or wondering if the driver has been there yet.
It's one of the easiest ways to turn a simple delivery building into a smart delivery station.
The same sensor can also be used to monitor:
β’ Gates
β’ Barn doors
β’ Storage buildings
β’ Equipment sheds
β’ Tool trailers
β’ Hunting properties
β’ RV storage
β’ Fuel storage areas
β’ Remote entrances
If it opens, you can know about it.
Mount the sensor to a door, gate, lid, or access point.
The sensor automatically connects through the cellular network.
Receive alerts anytime it opens or closes.
View activity history from your phone.
Optional gate control available with compatible gate operators.
Everything works inside a single app.
Receive an alert.
Open the app.
View the camera.
See exactly what happened.
Compatible with Alarm.com and other supported camera systems.
Alarm.com Cellular Access Sensor
Starting at $199
Monitoring Plans
$12 per month
or
$120 per year (save $24)
No activation fees.
Cancel anytime.
Choose the option that works best for you.
β Easy DIY installation
β Remote setup assistance available
β Professional installation available within 50 miles of Marble Hill, Missouri
Technology One has been helping homeowners, farms, ranches, businesses, and rural property owners stay connected since 2007.
We're an authorized Alarm.com dealer and provide real support from real people who understand rural properties, remote locations, and practical solutions.
Whether you're monitoring a delivery building, a gate, a barn, or a remote property, we're here to help.
Get instant alerts.
Know when it opens.
Stay informed from anywhere.
We stand behind every product we sell. If you're not 100% satisfied within 30 days, return it for a full refund. No hassle. No risk. Just peace of mind.