[Customer service] is great!
- Customer
Paul Z. from Oregon
- Aircraft
Cessna 182A Skylane
- EI Instrument
8am–4:30pm PST M–F
Sorry, We’re Closed
Our TR-1 provides exceptional performance, reliability and features. If you need to replace or overhaul an old failing instrument, consider buying one of our TR-1s from a company which has been designing quality aircraft instrumentation for over 40 years. Purchasing our TR-1 is substantially less expensive than overhauling or replacing your old needle gauge. We’re able to make this offer with a money-back guarantee because we’re confident you’ll love the performance, reliability and features these instruments offer.
| Amps | AOA | Bleed Air Temp | Cabin Pressure |
| Diff Air Pressure | EGT | EPR | Fuel Flow* |
| Fuel Level | Fuel Pressure | Hyd | ITT* |
| NG/N1* | NP/N2* | O2 Pressure | OAT |
| Oil Pressure | Oil Temp | TAT | TGT |
| Torque* | TOT | Volts | And More! |
* See Product Page
We offer one package option for our TR-1 instruments: Premium. The Premium TR-1 package is targeted for customers that need to minimize AOG time.
Bluetooth Field Calibration Device [FCD-TR-1] (add $600)

Dimensions
2″ standard round, 4.23″ long
Weight
0.3 Pounds (Instrument Only)
Power Requirements
6 to 55 Volts
Typical: 0.075 amps @ 28 Volts
Dimming
Auto (electric eye) and Manual
Environmental
DO-160G
Internal Storage
1,000 hours, RS232 port
Certifications
FAA TSO’d -C43c, -C44c, -C45b, -C47a, -49b, -C55a

[Customer service] is great!
Simple and Easy.
Easy to install and everything you need inside package. Good price, nice instrument and simple to use.
Very easy to install and directions were straight-forward.
Customer Service is far superior… with an excellent record of resolving … technical issues.
Nice Instrument, all the electrical information I need in one place. [I chose EI for its] performance and price.
Good support when we called with particular questions with the initial setup. We liked the functions and the price.
Very happy with our new tachometer!
Love it!
Great Service.
Great product. [I chose EI because] you have no competition.
Electronics International is an exceptional company with exceptional products… Oregon company, great products and great people.