---
name: "uthum"
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/uthum"
---

# uthum(4)

TEMPer HID thermometer and hygrometer

## NAME

**uthum** – TEMPer HID thermometer and hygrometer

## SYNOPSIS

**uthum\* at uhidev?**

## DESCRIPTION

The **uthum** driver provides support for pcsensors TEMPer devices. The following devices are supported by the **uthum** driver:

| | |
| --- | --- |
| *Device* | *Sensors* |
| TEMPerHUM | 1 Temperature and 1 Humidity |
| TEMPer | 1 Temperature (internal) |
| TEMPer1 | 1 Temperature (external) |
| TEMPer2 | 2 Temperature (internal/external) |
| TEMPerNTC | 2 Temperature (internal/external) |

The sensor possesses a collection of sensor values which are made available through the [sysctl(8)](/sysctl/8.md) interface. The humidity data unit is "%RH" (relative humidity) and the temperature data unit is "degC".

## SEE ALSO

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

## AUTHORS

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

## BUGS

There is not enough support for the external temperature sensor of the TEMPerNTC. Currently the **uthum** driver supports about 0 degC to 120 degC for the sensor.