Werk #19570: Room Alert 3S: fix internal temperature sensor when Celsius unavailable via SNMP walk

Component

Checks & agents

Title

Room Alert 3S: fix internal temperature sensor when Celsius unavailable via SNMP walk

Date

Apr 28, 2026

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

3.0.0b1 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.5.0p6	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.4.0p32	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

The Room Alert 3S internal temperature sensor plugin (introduced in Werk #19562) only fetched the Celsius OID from the device. On some hardware configurations, direct SNMP walks do not return a Celsius reading, causing the Room Alert 3S Temperature service (item: Internal) to produce no data.

The plugin now fetches both the Celsius and Fahrenheit OIDs. Celsius is preferred when available; Fahrenheit is used as a fallback so that the service continues to report the internal temperature correctly.

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