---
name: "admtt"
section: "4"
platform: "openbsd"
package: "man"
version: "8.0-current-20261101"
release: "OpenBSD 8.0-current (2026-11-01)"
platforms: ["openbsd"]
url: "https://new.carta.tech/admtt"
---

# admtt(4)

Analog Devices ADM1031 temperature sensor

## NAME

**admtt** – Analog Devices ADM1031 temperature sensor

## SYNOPSIS

**admtt\* at iic?**

## DESCRIPTION

The **admtt** driver provides support for the Analog Devices ADM1031 temperature sensor. The device possesses an internal and two external temperature sensors, plus two fan RPM monitors. These values are made available through the [sysctl(8)](/sysctl/8.md) interface.

## SEE ALSO

[iic(4)](/iic/4.md), [intro(4)](/intro/4.md), [sensorsd(8)](/sensorsd/8.md), [sysctl(8)](/sysctl/8.md)

## HISTORY

The **admtt** driver first appeared in OpenBSD 3.9.

## AUTHORS

The **admtt** driver was written by Theo de Raadt ⟨*deraadt@openbsd.org*⟩.