# SimpleTemp

SimpleTemp encoding allows you to represent a temperature value from -40°C (-40°F) to 87,5°C (189,5°F).

If you want to monitor temperature, understanding the *SimpleTemp* encoding is necessary. This is a simple system where **each hex value has a predefined value in degrees Celsius** (or Fahrenheit).

*SimpleTemp* encoding covers **two sets of temperature values** - true temperature values and temperature hysteresis values. Hysteresis values are used in specific downlink registers (0x1E, 0x20, 0x22) only, every other temperature value is a true temperature value.

{% hint style="danger" %}
Please note that there are two thermometer versions - ambi and precise. The **ambi** will have a precision of around **2-3°C (3.6°F-5.4°F)** and the **precise** **<0.5°C (<0.9°F)**. If you have a ***Full*** version of your device, you will have the precise version (which also has a humidity sensor).
{% endhint %}

**True temperature values** range from **-40°C (-40°F)** to **87.5°C (189.5°F)** where the difference between each value is **±0.5°C (±0.9°F)** for a total of **256** true temperature values. This covers all possible use cases from commercial freezer monitoring to forest fire prevention.

{% content-ref url="/pages/Uet5tZWtxdKHj0UIJZqz" %}
[Here are all the SimpleTemp true temperature values](/kb/simple-api-6-generation/api-6-encoding_23396515/simpletemp/here-are-all-the-simpletemp-true-temperature-values.md)
{% endcontent-ref %}

**Temperature hysteresis values** range from **0°C (32°F)** to **15.75°C (60.35°F)** where the difference between each value is **±0.25°C (±0.45°F)** for a total of **64** hysteresis values. They are used in temperature hysteresis downlink registers only.

{% content-ref url="/pages/D4ed4vHp27oABUqgW1i1" %}
[Here are all the SimpleTemp temperature hysteresis values](/kb/simple-api-6-generation/api-6-encoding_23396515/simpletemp/here-are-all-the-simpletemp-temperature-hysteresis-values.md)
{% endcontent-ref %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://ask.simplehw.eu/kb/simple-api-6-generation/api-6-encoding_23396515/simpletemp.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.