Propane Detector Replacement For Older Atwood 33535E

Updated 05/25/2026 | Published 05/23/2025

Products Featured in This Question

RV Propane Gas Detector - 12 Volt - 2 Wire - Black

(577)

$69.40

RV Propane Gas and Carbon Monoxide Detector - 12 Volt - 2 Wire - Black

(574)

$111.31

Question:

I need a propane detector for my 2017 Winnebago micro mini camp trailer the original Atwood propane detector went bad so I need a new one the numbers are PP00384842 33535E just curious what the replacement would be for this being dometic bought out Atwood thank you for your time

asked by: Justin L

Expert Reply:

Hey Justin,

The propane detector by Atwood is no longer available, even with Dometic. The best option for a replacement I recommend is # RS54FR, this is a propane and carbon monoxide detector. If you are just looking for propane I recommend # RS44FR as a replacement.

This may not be the exact size as your original detector, so you may have to use something to fill in the gaps of the mounting hole if needed. It comes with 2 mounting brackets for different size openings. The smaller being 5-3/4" long x 4-1/4" wide and the larger bracket being 7-1/4" long x 3-3/8" wide.

This uses the same 12v, 2 wire installation that your current one uses so the only work around will have to be the opening, depending on your original detectors size.

expert reply by: Nick S

Nick S.

9/12/2025

Hey Justin, did you have a chance to try out the propane or the propane and carbon monoxide detector I recommended? I'm curious to know how it worked out for you, as it could help others looking for a similar replacement.

Justin K.

9/12/2025

@NickSoh ya worked just fine thank you very much appreciate you checking in

Nick S.

9/12/2025

@JustinK That is great to hear, glad it is working well. Don't hesitate to reach out if you ever need anything else.

Justin

9/12/2025

@NickS absolutely will do thank you

Dan

5/25/2026

I’m replacing the same Atwood unit, installed in a Taxa Cricket. The original unit has reached end of life. In this install, all three wires are connected and there is very little extra wire to work with. Are there any three-wire replacement options? If not, how do you recommend proceeding?

Jerred H.

5/25/2026

@Dan The RV Propane Gas and Carbon Monoxide Detector item # RS54FR can be used to replace your 3-wire Atwood LP Detector. The third wire is just a backup power source in the event that your first power source is depleted. Typically one wire is ran to your DC fuse board in your power center as the back up and the main power running off your trailer's battery. You can attach the battery powered wire to the item # RS54FR and simply cap off the trailer power center wire.

Dan

5/25/2026

@JerredH - thank you for the quick and helpful response!