LED Device for Alarm Status for Doors

It would be awesome if I could purchase an accessory that I could stick to the door with an LED alarm status. I simple device the size of a sensor OR an LED built into the Door Sensor that would show red or green, or just red when armed.

Our back door is further away from the alarm keypad, and we don’t always realize the the alarm is beeping until we come back inside after letting the dogs out in the morning. A simple LED on the door or door alarm sensor would be a quick check to remind us to disarm. Thanks!