EI shines in providing excellent customer support and its products are reliable, affordable and of high quality.
- Customer
Fernando D. from Iowa
- Aircraft
Bonanza G35
- EI Instrument
8am–4:30pm PST M–F
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S-50 External 300 Amp Shunt
S-50
$48

EI shines in providing excellent customer support and its products are reliable, affordable and of high quality.
MVP-50 is a really great product
[I chose EI because of its] Reputation and value.
Always a pleasure to do business with EI. Products ship rapidly. I have been using your products for 20+ years.
Good engineering support.
Easy Install.
Your customer service is excellent and your products are top quality!
[Customer Support was] very responsive and helpful. [I heard about EI through] advice from others. Just about everyone I asked about the CGR-30 loves it and your company.
Great… price [&] support
I was able to try out the CGR-30P in a flight school plane. I was very impressed with the ease of use, visual quality, and information provided on the main screen… I feel it will pay for itself in fuel savings, and extended engine time before overhaul.
Staff appears to be very helpful when assistance is needed in verifying information. Heard good things about it [EI] from personal known aircraft owners.
The CGR-30P is a fantastic product and EI has excellent customer service. EI is the leader in engine monitors with a strong track record.