This topic has 0 replies, 1 voice, and was last updated 11 months, 3 weeks ago by Sophia Adams. Viewing 1 post (of 1 total) Author Posts April 11, 2024 at 5:44 pm #9518 Sophia AdamsParticipant I have an Edwards EST SIGA-HFS heat detector that needs replacement. Can I replace it with the SIGA-HFD model without any compatibility issues? Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In