How Do I Set the Code on My Home Security System?

Select a code. Choose a code that is easy to remember. Avoid using significant dates like children's birthdays or anniversaries, and do not write down the code. Home security systems typically require a 4-digit code.

Obtain the master code. Many security systems require a master code to access programming functions. If you recently moved into a home, contact your real estate agent or management company to obtain the code. Otherwise, try contacting the equipment manufacturer for information on standard master codes.

Locate the relevant code-entry buttons. Search the security system keypad for the numbered buttons. In addition, locate the keypad's menu key. Experiment with character keys to determine the appropriate button for entering the system's menu and scrolling functions.

Select programming mode. Once you locate the menu, select the programming menu. In addition, search the menu for "Access Codes" or a similar label. The access code function allows you to set new security codes.

Select a code location. Many security systems let you enter several access codes. This gives several individuals in the household access using a unique number. Scroll through the access code feature to locate an empty code slot. For example, the ADT Power864 system lists access codes with a "P." As a result, the first code would read "User Code 01P." Locate and select the code slot you would like to use.

Enter the new code. Using the numbered buttons, enter the code you selected. The keypad may beep to indicate the code was accepted.

Contact the system manufacturer. In the event you cannot set the code, contact the manufacturer of the system. Look over your system's code-entry pad, find the manufacturer, and locate the phone number. In addition, search the Internet for the owner's manual for your security system.