Tagged: Simplex 4100-5112 Replacement This topic has 1 reply, 2 voices, and was last updated 10 months ago by Khris James. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts January 25, 2024 at 2:46 pm #5486 William CooperParticipant I have a Simplex 4100-5112 fire alarm control panel, and I’m looking for a suitable replacement. Can someone recommend a compatible model? January 25, 2024 at 2:46 pm #5487 Khris JamesModerator Certainly! For replacing the Simplex 4100-5112, I would recommend the Simplex 8742-631. It’s a reliable and compatible option that should work well for your needs. Feel free to contact us at firealarm.com for more information and assistance. Author Posts Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In