I have never had an issue with any EI products… it looks fantastic on the panel.
- Customer
Thomas A. from Oklahoma
- Aircraft
Beechcraft Bonanza E35
- EI Instrument
8am–4:30pm PST M–F
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CP-1A LED Intensity Control Pot
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$72
Lead Time: Usually ships within 2–3 business days.

I have never had an issue with any EI products… it looks fantastic on the panel.
Awesome Tech Support. Like the functions it supports and the fit and look in the panel.
Your (customer) service is excellent!
This is a high quality instrument and works perfectly. Well designed, well constructed and well documented. I couldn’t be more pleased!
I started with a CGR-30C. I loved it so much, I added a CGR-30P… [Your customer service] was a great help configuring it and EI gave me a great deal. I am now an EI customer for life!
The display is large and clear. The functions are simple and easy to use. Great purchase decision.
People [at EI] were great to work with.
Easy to install and everything you need inside package. Good price, nice instrument and simple to use.
Good engineering support.
I have used your products in every airplane that I have owned over the years and have never had a problem. Thank You
Great Product, that provides a lot of very helpful engine data in an easy to use and see display! We are already finding cylinder cooling issues that we would’ve never known about before, and probably explains why we’ve had to replace that specific cylinder in the past. EI customer service on questions on how we wanted to set ours up was very helpful and positive. The CGR-30 had quite a few positive reviews online from other users.
Gauge works great! Very happy with purchase.