Aero-Lites AL-327MF Red LED Bulbs, 28V AC/DC, Dimmable, 10-Pack

Aero-Lites - HIGH PERFORMANCE LED DESIGNS Dimmable: Aero-Lites AL-327MF LED replacement bulbs are listed for 28-volt midget-flanged filament-bulb applications. This red 10-pack is specified for AC or DC input, with voltage-based dimming and a cross-reference list covering several bulb numbers. Confirm the base and operating voltage match your fixture before ordering.

At a glance

Listed as a direct drop-in LED replacement for 28-volt midget-flanged filament bulbs.
Bi-polar design is specified for positive or negative ground compatibility.
Brightness changes with input voltage, according to the listing.
The maker claims reduced current draw and negligible radiant heat compared with filament equivalents.

Price

$32.49Save 50%

Reference price: ~~$64.98~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

The cross-reference list helps identify potential replacements across several filament-bulb numbers.
A 10-bulb pack can serve multiple matching sockets or provide spares.
Specified AC/DC operation and bi-polarity suit matching circuits with either ground arrangement.

Technical specifications

17 specifications

Identity
Brand	Aero-Lites - HIGH PERFORMANCE LED DESIGNS
Model	AL-327MF
Manufacturer part number	AL-327MF-R-10EA-FBA

Electrical
Voltage	28V AC/DC
Wattage	0.70
Current	25mA
Polarity	Bi-Polar
Dimming	dims with forward voltage changes (reduce voltage lights dims ~ increase voltage light brightens)

Bulb and fit
Lamp shape	T1-3/4
Base style	Midget Flange
Fit type	Universal Fit
Color	Red
MOL	0.50"
MOD	0.24"
Cross-reference bulbs	#327, #376 , #387, #6034, #729, #727, S3368-2, AN3140-327, MS25237-327

Pack and service life
Number of items	10
Design life	50,000hr

What to know before buying

Listing details to confirm

Confirm the socket uses a midget-flange base and that its supply is 28V AC/DC. The listing also says 24/28V AC/DC in its title, while its detailed specification and description specify 28V. The listing gives design life as both 50,000hrs and 50,000hr. Treat the voltage range and life notation as inconsistent listing details rather than settled specifications.

Who is it for?

A good fit for

Buyers replacing compatible 28-volt midget-flanged bulbs in control-panel annunciation or aircraft-style panel post lights.
Users who need red output and want a 10-pack of potential #327-family cross-reference replacements.

Less suited to

Buyers whose fixture does not use a midget-flange base or does not match the stated electrical requirements.
Anyone needing a bulb color other than red.

Aero-Lites AL-327MF Red LED Bulbs, 28V AC/DC, Dimmable, 10-Pack · photo 2 — Additional product photo 2

Customer reviews on Amazon

5 / 5 · 7 ratings

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Only aggregate rating information is supplied, with all recorded ratings in the five-star category. The sample is small, and without comment summaries it does not show what buyers liked or whether the bulbs fit particular installations. Use it as limited context, not confirmation of compatibility or performance.

Frequently asked questions

Which bulb numbers does this listing say it replaces?

The listing cross-references #327, #376, #387, #6034, #729, #727, S3368-2, AN3140-327, and MS25237-327. Verify the socket and electrical requirements as well as the number.

What voltage should I check for?

The detailed specification says 28V AC/DC, while the title says 24/28V AC/DC. This inconsistency is worth resolving against your fixture and the selected listing before purchase.

Can the bulb be dimmed?

The listing says brightness changes with input voltage: reducing voltage dims it and increasing voltage brightens it.

How many bulbs are included?

The listing identifies this as a 10-pack and gives the number of items as 10.