# 3.5  Auxiliary Bottom Light

Model: lite-640t · Manual v1.0.2
Canonical: https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/3-5-auxiliary-bottom-light
Source: https://drive.google.com/file/d/1yQTDKasKxbvfVdANOx9bmlPYml-2dkCE/view
Updated: 2026-10-17

EVO Lite 640T Enterprise · SE V2 controller

The aircraft is equipped with an auxiliary bottom light (LED auxiliary light) at the bottom of the fuselage. The lights are used to assist the downward Visual Perception System when the aircraft is landing in weak light environments, so as to ensure better visual positioning performance and enhance the landing safety of the aircraft.

[PDF page 52, block 4](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/3-5-auxiliary-bottom-light#p52-b4)

Auxiliary Light

![Auxiliary Light](https://shop.skyflow.ca/manuals/evo-lite-640t-v1-0-2/d2d78cd6e960afa1e1aa748a.webp)

[PDF page 53, block 2](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/3-5-auxiliary-bottom-light#p53-b2)

<ul><li>For details about how to turn on or off the auxiliary light, please refer to &quot;6.4 Toolbar&quot; and &quot;6.5.7 More&quot; in chapter 6.</li></ul>

![Manufacturer note](https://shop.skyflow.ca/manuals/evo-lite-640t-v1-0-2/131464cce8795c2d5a78ec84.webp)

[PDF page 53, block 4](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/3-5-auxiliary-bottom-light#p53-b4)

## Warning

[PDF page 53, block 5](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/3-5-auxiliary-bottom-light#p53-b5)

When the auxiliary light is set to auto mode, if the aircraft is landing and the environment light is poor, the auxiliary light automatically turns on at around 5 meters above the ground and it turns off when the aircraft lands successfully.

[PDF page 53, block 6](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/3-5-auxiliary-bottom-light#p53-b6)