View instructions for replacing batteries in your door/window sensors which are commonly paired with the Simon XTi.

View instructions for replacing your door/window contact sensor's batteries.

Get started with your new door/window sensor.

Get started with your new 2GIG-DW10E-345 Door/Window Sensor.

Get started with your new sensor.

Get started with your new QS1135-840 Door/Window Sensor.

Get started with your new door/window sensor.

Get started with your new door/window sensor.

Get started with your new door/window sensor.

Learn how to connect the 2GIG-DW10E-345 Sensor to the GC2 Panel with this step-by-step guide.

Learn how to fix a sensor tamper error.

View instructions for resolving a sensor malfunction.

View instructions for resolving a sensor malfunction.

Learn how to connect the QS1135-840 Door/Window Sensor to the IQ Panel 2 with this step-by-step guide.

Sensor Malfunction: View instructions for resolving a 2GIG-DW10E-345 Sensor malfunction.

View instructions for connecting a door/window sensor to your panel.

Learn how to fix a sensor tamper error.

View instructions for replacing your sensor's batteries.

View instructions for resolving a sensor malfunction.

Learn how to fix a sensor tamper error.