---
name: "lmtemp"
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/lmtemp"
---

# lmtemp(4)

National Semiconductor LM75/LM76/LM77 temperature sensor

## NAME

**lmtemp** – National Semiconductor LM75/LM76/LM77 temperature sensor

## SYNOPSIS

**lmtemp\* at iic?**

## DESCRIPTION

The **lmtemp** driver provides support for the National Semiconductor LM75, National Semiconductor LM76, National Semiconductor LM77, Dallas Semiconductor 1775, and Philips Semiconductor LM75A temperature sensors. The sensor possesses a single temperature value that can be accessed 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 **lmtemp** driver first appeared in OpenBSD 3.6.