---
title: "Device log"
description: "The TapHome device log keeps the last 40 changes of each actuator, is hidden from the User role and is restored after a control unit restart."
url: "https://taphome.com/en/docs/configuration/device-log/"
language: en
lastmod: 2025-11-13
generator: hugo
ai:
  topics: ["device-log","history","troubleshooting","actuators","configuration","audit-trail"]
  questions: ["What does the TapHome device log show?","How many changes does the TapHome device log store?","Why don't I see a device log on a sensor?","Can a TapHome user see the device log?","Are device logs preserved after a control unit restart?","How do I expand or collapse the device log in the TapHome app?"]
---

# Device log

Track device changes and modifications history

Last updated: 2025-11-13

![Device log expanded](https://taphome.com/documentation/device-log/device-log-1.png)
![Device log collapsed](https://taphome.com/documentation/device-log/device-log-2.png)

The **Device log** function provides documentation on basic device modifications with these characteristics:

  - Device logs are not available on sensors, only on actuators
  - Device logs are not visible to **User** permission
  - System rotates last 40 changes. All older changes are dismissed.
  - During restart of control unit, those logs are recovered. Please note that hard restart (by power loss) can store only values every 30 minutes.

In **App Settings**, you can set **Collapse all logs in device details** or **Expand all logs in device details**.

**See also** — [Backup, restore, factory reset](https://taphome.com/en/docs/restore/), [Bus Analyzer](https://taphome.com/en/docs/setup/bus-analyzer/).