How to Change the Time on an ADT System



In the event that these instructions are unable to be followed with your specific model, the owner’s manuals for your model may be found online at After you have navigated to the ADC Manuals page by selecting the first Reference link, choose the link to the manual that corresponds to your specific model.

ADT manufactures a wide array of alarm systems that come with a wide variety of features, but they always have a clock. The procedures for adjusting the time differ from one model to the next, but in every instance, the changes are made by utilising the keypad that is located on the main unit. Find out how to adjust the time on two popular models: the Safewatch 3000, which has a digital display, and the Simon 3 system, which comes with spoken announcements. To make any changes, you will need either your master code or your installation code since this is a security measure.