---
title: Environmental Specifications
description: Rated operating and storage temperature range, maximum operating altitude, humidity, and ingress protection status for the Horizon Hardware Unit.
url: "https://docs.somewear.app/unmanned/installer/specifications/environmental-specifications/"
updated: "2026-08-27"
requires: {}
facets:
  hardware:
    - horizon:
        since: baseline
  client: []
  satcom: []
---

| **Parameter**                 | **Min** | **Typ**   | **Max** | **Units** |
| ----------------------------- | ------- | --------- | ------- | --------- |
| Ambient Operating Temperature | -20     | —         | 85      | °C        |
| Storage Temperature           | -40     | —         | 100     | °C        |
| Maximum Operating Altitude¹   | —       | —         | 4500    | m         |
| Humidity                      | —       | Not Rated | —       | —         |
| Ingress Protection Rating     | —       | Not Rated | —       | —         |

¹ Geometric altitude.

> **Note**
>
> Limitations are by design and have not been tested. Device performance is not guaranteed if these environmental ratings are violated.