The CGR-30P is working great and it’s an outstanding addition to our avionics package.
S-50 External Shunt
FAA Approved Accessory
- PMA’d
- 50 Amp, 50mV (100 amp short burst capability).
- 2″ (W) x 1.2″ (D) x 1.7″ (H)
- 3.5 Oz Unit
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Product Overview
Prices
Retail Prices
Package includes:
- S-50 Shunt
- Installation Instructions
Description
Package
Retail Price
S-50 External 300 Amp Shunt
S-50
$48

Specifications
Videos
Documents
Documents & Manuals
Testimonials
Customer Testimonials
Your sales and support teams are very helpful.
Works Great! Getting used to menu the more I fly — Nice addition to airplane.
I have several EI units in my aircraft and have been very pleased with their reliability over the years. The other great part, besides the unit themselves, is the support from you all. Thank you for your support over the years… I chose IE for your reputation for quality and pricing. I have been very pleased with my units. My graphic engine analyzer, fuel flow meter, volt/amp meter, RPM and now Manifold gauge.
- Customer
Boyd G. from Arizona
- Aircraft
Cessna 182J Skylane
- EI Instrument
Simple and Easy.
- Customer
Aaron H. from Washington
- Aircraft
Cessna 140
- EI Instrument
Nice Instrument, all the electrical information I need in one place. [I chose EI for its] performance and price.
- Customer
David C. from the United Kingdom
- Aircraft
Scottish Aviation Bulldog
- EI Instrument
Always built well. Always dependable. Been using & relying on EI equip for over 35 years!
Very easy to install and directions were straight-forward.
- Customer
Paul H. from Oklahoma
- Aircraft
Piper PA-28-151 Cherokee Warrior
- EI Instrument
We’ve worked with EI for years and love the product and support always received. Quality & dependability.
- Customer
Tammy B. from North Carolina
- Aircraft
Air Tractor AT-802
- EI Instrument
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.
- Customer
Justin R. from Texas
- Aircraft
Cessna T207A Turbo Skywagon
- EI Instrument
Outstanding support. From the friendly demeanor of whoever answers the phone to all the way to [their sales representative]. Your CGR-30 series is superb.
Straightforward installation instructions, great wiring harness. Quick answers from Tech Support.