Replacement LP Gas Detector for a CCI 7770.2 / Pre Tell Detector
Updated 12/29/2025 | Published 12/24/2025
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Question:
Looking for a LP Gas Leak Detector to replace CCI Pre Tell 21, Model No. 7770.2 Propane Gas Leak Detector. 6 3/8inch x 2 7/8.
asked by: Paulette B
(click to enlarge)
(click to enlarge)
Expert Reply:
Hey Paulette, thanks for the pictures and information! We have two options to replace your CCI Pre Tell 21, Model No. 7770.2 Propane Gas Leak Detector. They are the RV Propane Gas Detector item # RS44FR in black or item # RS64FR in white.
The RV Propane Gas Detector item # RS44FR in black or item # RS64FR in white measure 4-1/4" long x 2-5/8" wide x 1/2" thick and are powered off of 12v just like your current one. They include two mounting brackets that measures 7-1/4" long x 3-3/8" wide and 5-3/4" long x 4-1/4" wide.
If you have any additional questions, go ahead and click on the box that says Reply to Jerred H and I'll be happy to answer them.
Todd G.
12/29/2025
The model that I purchased was easy to install and worked perfectly.
Product Page this Question was Asked From
RV Propane Gas Detector - 12 Volt - 2 Wire - Black
- RV Gas Detectors
- Propane
- Alarm
- Black
- RV Safe
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Jeff P.
12/29/2025
I purchased the RS44FR propane gas leak detector. It replaced the expired one in my 2004 Airstream. The installation was easy. I have been happy with etrailer. They always suggest the correct replacement part. Jeff P.