How to Know if Someone Leaves the Fridge Door Open

If you want a DW S-Line programmed for notification only (no alarms) on a fridge or cabinet, you can use Sensor Group: 25 - Local Safety Sensor

Qolsys DW Door/Window Contact - Programmed for no response type

Sensor Type: Door/Window
Sensor Name: As Desired
Chime Type: As Desired
Sensor Group: 25 - Local Safety Sensor
Voice Prompts: As Desired
Source: S-Line

You can find a variety of programming guides for Qolsys panels here: