Be sure to sign up for our Battery Life Reminder Program. It’s completely free. All you have to do is fill out the form below with the required information so that in 9 years from your installation date we will send you a friendly reminder to change your batteries. We can call, text, email or all three – you decide what works best for you. Oh, and we won’t spam your inbox or sell your contact information for any reason…. Pinky Promise.