# Information about devices

![](/files/sy8RvKKD6tG3sbzvYidn)

**Low battery** - the number of keys that have a battery charge below 30%. The battery charge is updated when the key is connected to the server. If there has been no connection for a long time, then the charge data will not be relevant.\
**Device error** - the number of HK that went into the error state.\
**License expired** - the number of HKs whose license has expired.\
**License warning** - the number of HKs whose license expires in 3 months.\
**Registered** - the number of HKs that are registered on the server.\
**In reserve** - the number of HKs that are registered on the server, but are not tied to specific users.


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