The OPT-1 is more readable than the factory Cessna oil pressure/temp gauges.
- Customer
Daniel N. From California
- Aircraft
Cessna 175 Skylark
- EI Instrument
8am–4:30pm PST M–F
Sorry, We’re Closed
AL-1 Red Annunciator Light
AL-1R Red Annunciator Light
$32
AL-1 Yellow Annunciator Light
AL-1Y Yellow Annunciator Light
$32
AL-1 Blue Annunciator Light
AL-1B Blue Annunciator Light
$32
AL-1 Green Annunciator Light
AL-1G Green Annunciator Light
$32
AL-1 Orange Annunciator Light
AL-1O Orange Annunciator Light
$32

Type
Chrome Annunciator Light
Mount
Mounts in a 5/16” hole.
Size
.4” diameter x 1” depth. Operates on a 12 or 24-volt system. Comes with 32” leads.
The OPT-1 is more readable than the factory Cessna oil pressure/temp gauges.
Excellent customer service. Without a doubt the best aviation part I have purchased.
Straight up install no issues. Works as advertised!
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.
Pleasure supporting folks with like values.
The FP-5l I had installed is easy to use and so accurate it’s almost scary. When I find a company that produces a product that good I stick with them. The fact that these instruments also look so darn good didn’t hurt either.
The reviews online were very good. Customer service has been great.
Great company to deal with. Excellent customer service. [I chose this E.I. instrument because it’s] simple and easy to use.
Great service. [I replaced/upgraded] unit in aircraft.
Sales reps have been very friendly and helpful.
Responsive customer service, kudos to [customer service].
I have never had an issue with any EI products… it looks fantastic on the panel.