Very easy to install and directions were straight-forward.
- Customer
Paul H. from Oklahoma
- Aircraft
Piper PA-28-151 Cherokee Warrior
- EI Instrument
8am–4:30pm PST M–F
[mbhi location="Main"]
S-300 External 300 Amp Shunt
S-300
$60

Very easy to install and directions were straight-forward.
Outstanding Customer Service!!
EI shines in providing excellent customer support and its products are reliable, affordable and of high quality.
Great Service.
Currently have multiple EI Instruments in our aircraft. Quality and reliability are key.
The OPT-1 is more readable than the factory Cessna oil pressure/temp gauges.
Great company to deal with. Excellent customer service. [I chose this E.I. instrument because it’s] simple and easy to use.
Nice bright display.
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.
Great product at a great price …. (and) reliability.
It works very well; easy operation.
Looks great. Works great.