Doorbell pro alerts you when someone s at the door even if they don t ring the bell.
Simplisafe alarm on garage door.
The simplisafe smart lock makes sure your door is always locked.
In the diagram below the entry sensor has been installed on the doorframe and the magnet on the door.
It locks your door the minute you arm your system or automatically on a timer.
The host explains that simplisafe s sensors communicate with the base on the 433 92mhz frequency which is very popular among other consumer electronics like garage door openers baby monitors.
Even if you forget.
So your front door is always protected.
The majority of break ins happen through an unlocked entry.
When the magnet is within 2 inches of the grooves on the sensor it knows the door or window is closed.