---
name: "uoakrh"
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/uoakrh"
---

# uoakrh(4)

Toradex OAK USB temperature and relative humidity sensor

## NAME

**uoakrh** – Toradex OAK USB temperature and relative humidity sensor

## SYNOPSIS

**uoakrh\* at uhidev?**

## DESCRIPTION

The **uoakrh** driver provides support for the Toradex OAK RH. The sensor possesses a collection of sensor values which are made available through the [sysctl(8)](/sysctl/8.md) interface. The relative humidity data unit is "%RH" and the temperature data unit is "degC". The device has a unique serial number, indicated in the description part of the sensor value.

## SEE ALSO

[intro(4)](/intro/4.md), [uhidev(4)](/uhidev/4.md), [sensorsd(8)](/sensorsd/8.md), [sysctl(8)](/sysctl/8.md) *Toradex Web Page*, http://developer.toradex.com/hardware-resources/usb-sensors-and-peripherals.

## HISTORY

The **uoakrh** device driver first appeared in OpenBSD 5.3.

## AUTHORS

The **uoakrh** driver was written by Yojiro UO ⟨*yuo@nui.org*⟩.