Easiest company to deal with and an awesome product! Price, Certified for Primary, and Features.
- Customer
Justin E. from California
- Aircraft
Piper PA-30 Twin Comanche
- EI Instrument
The RPM Isolator Packet contains the essential components required to condition the RPM signal from your Magneto for accurate readings on Electronics International instruments. These isolators are designed to attenuate strong signals that can otherwise cause high or jumpy RPM readings. The kit includes primary ring terminal isolators for the mag switch, along with additional inline isolators to fine-tune the signal strength for various magneto types. This packet is compatible with the R-1, CGR-30P, CGR-30C, MVP-50P, and any system utilizing the EDC-33P.
8am–4:30pm PST M–F
[mbhi location="Main"]
RPM Isolator Package
Standard
$19.95

Easiest company to deal with and an awesome product! Price, Certified for Primary, and Features.
Looks Great, and intuitive to use. Packs a lot of information in a tight area, yet, I don’t need my glasses to read it!
I really enjoy your products [because they are] simple and easy to use and affordable.
We’ve worked with EI for years and love the product and support always received. Quality & dependability.
EI shines in providing excellent customer support and its products are reliable, affordable and of high quality.
It works very well; easy operation.
This is the third EI instrument I am having installed in “Lillybelle .” I am impressed with the ease of operation, the affordability and the accuracy of each of these instruments. For years I trusted my life to 50+ year old gauges. Now I don’t have to. What a relief!
Good to go! Excellent instructions and easy install. Outstanding instrument!
Phone service for ordering was quick and easy. Shipping was quick.
Always very friendly and knowledgeable staff. Over time, I have purchased six different EI instruments for the two planes I own. The instruments are easy to install, very accurate, and dependable. EI has very stable and easy-to-operate instruments.
Straightforward installation instructions, great wiring harness. Quick answers from Tech Support.
A clear capable replacement for a cluster gauge. Vivid colors used which make it easy to see engine status at a glance.