Subdetection Unit is a Local Specialty material found in Fontaine in Genshin Impact. See where to find all locations of these mechanical bugs, how to use it, and everything else you need to know about it here.

Subdetection Unit Locations

Subdetection Unit Locations Map

There are 77 Subdetection Units that you can find hovering on the surface of Fontaine region, with majority of them sitting around the ruins of the Fontaine Research Institute area.

How to Get to Fontaine and Map Guide

Make Use of Character Farming Passive

Fontaine Local Specialty Markers
Lyney

Lyney's Passive, Trivial Observation, displays the location of nearby specialties unique to Fontaine on the mini-map!

Where to Buy Subdetection Unit

No Shops Selling Subdetection Unit

There are currently no known shops available that sell Subdetection Unit in Genshin Impact.

Subdetection Unit Respawn Time

Respawn Time is 48 Hours

Subdetection Unit reset exactly 48 hours after you collect them. Relog the game or teleport from the farthest waypoint and check the location once more to see it respawn.

Check out other player's worlds

If you're already out of Subdetection Units in your world, you can try asking other Travelers in Co-op mode!

Genshin Co-Op Boards
Friend Request Board	Co-Op Board	Supporting Cast Board

How to Use Subdetection Unit

Used to Ascend Wriothesley

All Characters
Wriothesley

Total Subdetection Unit Needed

Ascension Level	Material
20→40	Subdetection Unit x3
40→50	Subdetection Unit x10
50→60	Subdetection Unit x20
60→70	Subdetection Unit x30
70→80	Subdetection Unit x45
80→90	Subdetection Unit x60

Subdetection Unit is used to ascend Wriothesley to his next ascension level. You must collect 168 of these clockwork bugs to ascend him to the maximum level.

How to Ascend Characters

Subdetection Unit Information

What are Subdetection Units?

Subdetection Unit	Rarity	1
	Type	Materials
	Effect	None

Detection units produced by Fontaine Research Institute using new models of artificed components. Its original purpose was monitoring all kinds of environmental data.

Genshin Impact Related Guides

List of Local Specialties

All Local Specialties

Local Specialties in Mondstadt
Calla Lily	Wolfhook	Valberry
Cecilia	Windwheel Aster	Philanemo Mushroom
Small Lamp Grass	Dandelion Seed
Local Specialties in Liyue
Jueyun Chili	Noctilucous Jade	Silk Flower
Glaze Lily	Qingxin	Starconch
Violetgrass	Cor Lapis	Clearwater Jade
Local Specialties in Inazuma
Sea Ganoderma	Sakura Bloom	Naku Weed
Dendrobium	Onikabuto	Crystal Marrow
Sango Pearl	Amakumo Fruit	Fluorescent Fungus
Local Specialties in Sumeru
Rukkhashava Mushrooms	Nilotpala Lotus	Kalpalata Lotus
Padisarah	Henna Berry	Scarab
Sand Grease Pupa	Trishiraite	Mourning Flower
Local Specialties in Fontaine
Beryl Conch	Rainbow Rose	Romaritime Flower
Lumidouce Bell	Lumitoile	Subdetection Unit
Lakelight Lily	Spring of the First Dewdrop
Local Specialties in Natlan
Saurian Claw Succulent	Quenepa Berry	Sprayfeather Gill
Brilliant Chrysanthemum	Withering Purpurbloom	Glowing Hornshroom

All Items and Materials

List of Items and Materials