- VA-1A Volts/Amps Instrument
VA-1A Volts/Amps Instrument

FAA Approved Instrument
- FAA STC’d as a Primary Replacement.
- Upgrade your aircraft panel with the most precise and stable volts/amps instrument.
Easy To Install & Compatible With 12/24-Volt Systems
- The VA-1A fits flush into an existing 2 1/4″ hole.
- Switch on the back of the instrument allows installers to easily choose between 12 and 24-volt systems.
Accurate, Dependable & Easy To Use
- Electronics International consistently has been a leader in digital engine instrumentation since 1979.
- LCD is sunlight viewable and backlit for night operation.
Product Overview
VA-1A Overview

Features
- ‘High Volts’ alarm for overvoltage situations.
- ‘Discharge’ alert when your battery is in a discharging condition.
- 12 or 24-volt system compatible, a switch on the back of the instrument allows installer to choose between 12 and 24-volt.
- LCD is sunlight viewable and backlit for night operation.
Prices
VA-1A Package Retail Prices
Pricing Starting At $500
Included with all packages:
- VA-1A Instrument
- Wire Harness
- Installation and Operating Instructions
- STC & AML
VA-1A Package with Built-in Shunt
VA-1A
$500
VA-1A Package with External 100 Amp Shunt
VA-1A-50-WS
$548
VA-1A Package with External 300 Amp Shunt
VA-1A-300-WS
$560
VA-1A Package No Shunt (specify external shunt value when ordering)
VA-1A-XX
$500
Lead Time: usually ships within 2–3 business days.
Specifications
VA-1A Specifications
Dimensions
2.50″ x 2.50″ x 3.65″ Deep, 2 1/4″ Flush Mount
Weight
11 oz (Instrument only)
Power Requirements
7.5 to 40 Volts, Typical: 0.3 amps @ 12 Volts
Display
Backlit LCD, viewable in Direct and Indirect Sunlight
Certifications
FAA STC’d, PMA’d

Videos
Product Videos
Documents
Documents & Manuals
Testimonials
Customer Testimonials
Installed digital volt/amp gauge in PA 28-181. Great unit easy to install. Much better than original.
I installed a VA-1A Volts/Amps Insturment [sic] in my 1970 V35B to replace the original analog amp meter. What a great dual purpose digital gauge! Installation was simple and the product is very well made. It goes well next to my SuperClock I installed a couple of years ago. EI makes great products and this one will satisfy the most discriminating owner.
- Customer
- Aircraft
- EI Instrument
Good to go! Excellent instructions and easy install. Outstanding instrument!
Nice Instrument, all the electrical information I need in one place. [I chose EI for its] performance and price.
- Customer
- Aircraft
- EI Instrument
Easy install, good product. [I chose EI because of my] experience with [the] product.
- Customer
- Aircraft
- EI Instrument
Great service. [I replaced/upgraded] unit in aircraft.
- Customer
- Aircraft
- EI Instrument