Nice experience working with [sales]… to configure my gauges.” Reason I chose EI? “Past experience with EI.
- Customer
Clark M. from New Hampshire
- Aircraft
Beechcraft Bonanza C35
- 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)
TR-1-FF Fuel Flow Instrument – Premium Package
TR-1-FF
$2,400
Bluetooth Field Calibration Device – Option
FCD-TR-1
$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

Nice experience working with [sales]… to configure my gauges.” Reason I chose EI? “Past experience with EI.
Great customer service!
Your (customer) service is excellent!
[I chose the CGR-30P because of its] ease of use.
[EI’s FP-5L with Aux Carb Temp Option] gave me fuel flow & Carby temp & was easy to retrofit.
Really impressed thus far . . . . a rock solid replacement for old mechanical gauges.
Very happy with our new tachometer!
Very easy to install. Harness is clearly marked. Instrument worked first time. The instrument is intuitive and easy to use.
Love the situational awareness that the CGR-30 Combo gives me. Easy to read and understand displayed information.
The reviews online were very good. Customer service has been great.
Sharp-looking gauges. [I chose EI because of your] reputation.
Really glad to have accurate oil psi and temp! [It’s a] match with previous [EI] installs.