# Wand of secret door detection

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Name

secret door detection

Appearance

random

Abundance

5%

Base price

150 zm

Weight

7

Type

non-directional

Maximum charges

15  

Spell

detect unseen

Monster use

Will not be used by monsters.

The wand of secret door detection is a wand that appears in NetHack.

Effects
 
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Area in which traps etc. are revealed 
When zapped, the wand has the same effect as a spell of detect unseen: it detects all undiscovered secret doors, mimics, and traps in a radius of 8 squares in line-of-sight upon zapping/engraving.[1] It will also show the location of submerged creatures in pools. On the Plane of Air only, the wand also penetrates clouds.
Nearby monsters that you can't see due to invisibility will be revealed as I. Marks on spaces without monsters are removed, and monsters that are hiding will be revealed. Engraving with the wand will only auto-identify it if any of these things are present; otherwise, it gives no message.

Strategy
Identification of this wand is very easy, as it is non-directional and the wands of light, enlightenment, create monster, and wishing - all of which are also non-directional - have very obvious effects and usually auto-identify when zapped.
The wand of secret door detection is most often used for finding the hidden entrance to the temple in Moloch's Sanctum. It can also be used to find the portals on the Elemental Planes.

References

↑ Zap.c#zapnodir, Detect.c#findit, Hack.h#line21, Vision.c#do_clear_area, Detect.c#findone

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It may contain text specific to NetHack 3.6.4. Information on this page may be out of date.
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