# What does "ZONE16" mean in RNG19\_RFL8\_SIG16\_NIR16\_ZONE16 return profile?

**URL:** <https://community.ouster.com/t/what-does-zone16-mean-in-rng19-rfl8-sig16-nir16-zone16-return-profile/475>\
**Category:** Software\
**Created:** [April 7, 2026, 1:47pm UTC](https://community.ouster.com/t/what-does-zone16-mean-in-rng19-rfl8-sig16-nir16-zone16-return-profile/475 "2026-04-07T13:47:32Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![CST\_ISE](https://avatars.discourse-cdn.com/v4/letter/c/67e7ee/32.png) [@CST\_ISE](https://community.ouster.com/u/CST_ISE)\
**Post date:** [April 7, 2026, 1:47pm UTC](https://community.ouster.com/t/what-does-zone16-mean-in-rng19-rfl8-sig16-nir16-zone16-return-profile/475/1 "2026-04-07T13:47:32Z")

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Hi everyone,

I’ve noticed some new return profiles on Ouster Studio:

`RNG19_RFL8_SIG16_NIR16_ZONE16`

`RNG15_RFL8_NIR8_ZONE16`

I was wondering what the `ZONE16` part stands for in these profiles. I couldn’t find any documentation about it, so I was hoping someone could clarify or point me to the relevant docs.

Any hints or documentation would be much appreciated. Thanks a lot!

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**Author:** ![Samahu](https://yyz2.discourse-cdn.com/flex004/user_avatar/community.ouster.com/samahu/32/39_2.png) [@Samahu](https://community.ouster.com/u/Samahu)\
**Post date:** [April 7, 2026, 3:10pm UTC](https://community.ouster.com/t/what-does-zone16-mean-in-rng19-rfl8-sig16-nir16-zone16-return-profile/475/2 "2026-04-07T15:10:01Z")

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Please refer to the doc [Ouster SDK Zone Monitor — Ouster Sensor SDK 0.16.1 documentation](https://static.ouster.dev/sdk-docs/reference/zone_monitor.html) which covers the meaning of the ZONE field. To activate this feature you will need to upload 3d meshes that define the zones and enable the zone packets on the sensors.

Hope this helps!