Installed digital volt/amp gauge in PA 28-181. Great unit easy to install. Much better than original.
S-300 External Shunt
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Product Overview
Prices
Retail Prices
Package includes:
- S-300 Shunt
- Installation Instructions
Description
Package
Retail Price
S-300 External 300 Amp Shunt
S-300
$60

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Documents & Manuals
Testimonials
Customer Testimonials
Every person was willing to help me when I needed and the whole purchasing process was smooth. [And, E.I.] was recommended by my mechanic.
Awesome Tech Support. Like the functions it supports and the fit and look in the panel.
- Customer
Brian M. from California
- Aircraft
Mooney M20F Executive 21
- EI Instrument
Great to have all 6 egt’s, installation was straightforward. [I chose E.I. because of] price and availability.
- Customer
Errol O. from Ontario, Canada
- Aircraft
Cessna 182 Skylane
- EI Instrument
I like the 3.125″ format. Plus there are no hidden costs of probes you have to buy later…
- Customer
Anthony H. from Oregon
- Aircraft
Piper PA-18 Super Cub
- EI Instrument
Great service and support for great products!
While the installation is not quite done yet, I have seen the unit in my aircraft with the engine running and the monitor producing numbers. It looks very good and I cannot wait to go flying with it!
[EI’s FP-5L with Aux Carb Temp Option] gave me fuel flow & Carby temp & was easy to retrofit.
Your company shares a good reputation!
E.I. Always Exceeds Expectations!
- Customer
Michael S. from California
- Aircraft
Beechcraft Bonanza Model 33 Debonair
- EI Instrument
We have other EI products currently and have always been satisfied.
Works great!