Smart security. Made simple.

Be more aware of what happens in your home
The door/window sensor is a basic building block of home security alarms. But it’s more than that. It’s a tool to monitor activity in your home. Used with Alarm.com’s sensor activity monitoring, this little device opens the door to a world of smart home applications.
The fridge was left open
Be alerted when the refrigerator was left open. Or the basement door. Or the medicine cabinet. Get creative.
Trigger home automation
Automatically turn on the lights when a door opens. Or record a video clip. Adjust the thermostat when a door or window was left open.
Detect intrusions with Surety
If you’re going to use a security alarm, choose a professional grade sensor with secure wireless communication, so you can be confident it will do its job.