We liked the price and the reputation of your company.
- Customer
Roy C. From Kentucky
- Aircraft
Piper PA-28-235 Cherokee Pathfinder
- EI Instrument
8am–4:30pm PST M–F
Sorry, We’re Closed
S-300 External 300 Amp Shunt
S-300
$60

We liked the price and the reputation of your company.
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!
Have had EI instruments in my past plane and current plane and they always performed flawlessly.
The equipment is fantastic, very intuitive, and easy to use.
Very complete and thorough packaging. Well-prepped wiring harnesses. Quick and efficient turnaround time. Great communication throughout the process.
I have worked with and installed a few of your competitors’ and your systems. EI instruments’ ease of use and installation make these systems my go-to choice and number one recommendation to customers.
[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.
I like the 3.125″ format. Plus there are no hidden costs of probes you have to buy later…
[I chose EI because of its] reputation [and the] quality and appearance of the instrument.
Always built well. Always dependable. Been using & relying on EI equip for over 35 years!
The reviews online were very good. Customer service has been great.
Your product didn’t feel cheaply made. Overall much better quality with the bezel and buttons and knobs. Also much easier to navigate and add fuel.