Test Audio





Alert 500

590 ft Takeoff & Landing Height Announcer for All Aircraft

Quick Install | FAA Approved | One-time Setup


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Glassy Guide 400

400 ft Takeoff & Landing Height Announcer for Seaplanes

Quick Install | FAA Approved | One-time Setup


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Glassy Guide 400 Quick Install / Portable

Portable Takeoff & Landing Height Announcer for All Aircraft

Quick Install | One-time Setup


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Our Products

Model: LHA-500-A

SkyVoice Alert 500


Model: GG-400-A

SkyVoice Glassy Guide 400


Model: GG-400-A Quick Install / Portable

SkyVoice Glassy Guide 400 Quick Install / Portable


Model: SVA-BTK

SkyVoice Alert Bench Test Kit


Model: 30-IK-1

30 minute Installation kit


Model: HML 12-3.5Ah-01

Lithium Ion Rechargeable Battery


About Us

SkyVoice Alert LHA 500 is a
Take-off and Landing Height Announcer with LiDAR
range of 590ft & Gear Warning from 560ft until the Gear is down and Locked.

At Holy Micro! LLC, we specialize in the design and manufacturing of cutting-edge SkyVoice Alert 500 for certified as well as experimental aircrafts. It’s a co-pilot with bird's eye for safer flying. FAA certified as Non-Required Safety Enhancement Equipment (NORSEE). As a leading provider of advanced technology solutions in the aviation sector, we pride ourselves on delivering innovative products that ensure safe and efficient operations in various conditions. Our SkyVoice Alert 500 is affordable, essential, and easy to install

Installation Images

Plane model: Lancair 320

Lancair 320 - SkyVoice Alert LHA-500 mounted in the inspection panel for the aileron bellcrank. Fabricated a new panel out of 6061 aluminum. Used washers to make it flush with the skin since the aluminum was much thinner than the fiberglass.

Hear the alerts through the Audio panel or Headset via Bluetooth or Wired, HUD


LiDAR range of 590ft.


Repeated Gear warnings from 560 feet until the gear is down & locked


LiDAR based height call-outs, 500 to 1 foot on Take-off/ Landing


Many user selectable Reminders :

  • Check Gear, Checklist, LC GUMPS, Flaps, Check Speed, Check Tank and Check Fuel
  • GPS/MSL Height call-outs & reminders - Check Oxygen, IFR Altimeter and Top of descent
500ft = 1 Min

Is Gear Down?

How High?

SkyVoice Alert 500

SkyVoice Alert can announce 500, 400, 300, 200, 100, 70, 50, 20, 10, 5, 2 and 1 feet during take-off and/or landing. The user can also set reminders for their preferred heights from a set of available reminders like Check Gear, LC GUMPS, Flaps, Checklists, Check Speed. Pilots can choose from various run-time reminders including Check Fuel & Check Tank.

SkyVoice Alert 500 can also make many GPS/MSL based height announcements and reminders 18000 ft, 12500 ft, 11000 ft, 10000 ft, 9000 ft, 8000 ft, 7000 ft, 6000 ft, 5000 ft, 4000 ft, 3000 ft, 2000 ft, 1000 ft, and 500 ft. Users can customize GPS based reminders, such as Check Oxygen, IFR Altimeter & Top of Descent.

Our Happy Customers


Jesse Saint

I just installed an LHA-500 in my 172 with a bluetooth audio ... Read More


Mark Morton

The product is great. I had a beta version installed last Ju ... Read More


Jim Judkins

I recently had the LHA-500 installed in my PA32R-300. I’ve ... Read More


Jesse Saint

I have been installing avionics for over a decade, and have ... Read More