1. Back to Support
  2. Back to Home Security
  3. CentraLite 3400 Keypad Battery Installation

CentraLite 3400 Keypad Battery Installation

Learn how to install batteries in the CentraLite 3400 Keypad.

What You'll Need
  • XFINITY Home - Secure
  • 3400 Keypad
  • Two CR123A batteries

How to Install the Batteries

Before proceeding, make sure that your system is disarmed. Working on devices while the system is armed can generate false alarms.

Do You Need A Battery? Make sure you have a battery before you proceed. Easily order your replacement battery from batteryjunction.com or visit your nearest battery retailer.

Is This Your Keypad? Make sure that your Keypad looks like the one in the image below. If it does, you're in the right place to find out how to install a battery in your Keypad.
CentraLite 3400 Keypad.
  1. Remove the Keypad from the wall by sliding it upwards until it is free of the mounting bracket, then find the small horizontal raised line located on the back of the Keypad. This line is on the battery cover.
  2. Place your thumb on the horizontal line and push toward the end of the Keypad until the cover is removed.
    Back of CentraLite 3400 Keypad

    Take a Look. If a battery is already present, remove it by using your fingertip to gently pull one end of the battery up until the battery is loose and you can pull it free from the slot.

    The battery compartment contains a diagram of the proper battery position with a symbol indicating which way the positive (+) end of the battery should be facing.
  3. Insert two CR123A batteries into the compartment, positioning the positive (+) ends of the batteries as shown in the battery diagram.
    Back of CentraLite 3400 Keypad with battery compartment open.
  4. Align the cover with the slots in the track on the Keypad and slide the cover down the track until it snaps into place.
    Back of CentraLite 3400 Keypad with slots for sliding cover back on.
  5. When the batteries have been inserted correctly, the Keypad buttons and indicator lights will light up.
    Front of CentraLite 3400 Keypad with lights illuminated.
  6. Reattach the Keypad to the wall by sliding it into the mounting bracket until secure.

Find this article at:


Was This Article Helpful?

Rate this article on a scale of 1 - 5

Related Articles

Need more help? We're on it.

Find an XFINITY Store or service center near you.