Inkbird ITH-11-B temperature readings are off?

Hardware
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1

Hi,
I have a Inkbird ITH-11-B Bluetooth thermometer connected to Home Assistant * 2025.4.1 (Core) / Supervisor 2025.04.0 (Supervisor) through the Bluetooth integration. I’ve noted that the temperature readings sometimes spike for unknown reasons and ruin the timeseries graphs. The readings in Home Assistant (viewed here in the Android app) for this sensor on the 11:th of April is shown below right image while Inkbirds android app show this as in the left image:

imgonline-com-ua-twotoone-2ZQMSdjw6XrddGAx
imgonline-com-ua-twotoone-2ZQMSdjw6XrddGAx2080×909 142 KB

Could there be something wrong with how Home Assistant fetches readings? or does the smoothing method needs tweaking?

2

Have you got the images the right way round? The image on the right looks like Home Assistant.

3

Typo fixed!

1 Like
4

Just chiming in to say that I am seeing the same issue with the Inkbird IBS-TH sensor. Humidity occasionally spikes to 655.35% and temperature occasionally spikes to 32F regardless of the real conditions.

Given those specific values every time, I wonder if the sensor is sending a randomly garbled or negative reading from time to time.

5

Simply add Outlier filter.

6

Can this be applied on existing entities instead of creating new filtered ones? i dont want to lose my historical data.