Tagged: Replacement, RTS451KEY, System Sensor This topic has 1 reply, 2 voices, and was last updated 11 months, 2 weeks ago by Khris James. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts January 10, 2024 at 1:54 pm #4747 Jason ThompsonParticipant Hello, I have a System Sensor RTS451KEY and I’m looking for a suitable replacement. Can you help me with that? January 10, 2024 at 1:54 pm #4748 Khris JamesModerator Certainly! The suitable replacement for your System Sensor RTS451KEY would be the RTS151KEY. It offers similar functionality and compatibility. If you have any more questions, feel free to ask! 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