Video guide - PCU 504 UNI time relay with power failure backup

Video guide - How does the PCU 504 UNI time relay work?

In the event of a power failure, the relay maintains the contacts for up to 10 minutes.
There are three functions available:
- Hold (for a time set in advance by the user),
- Delayed activation (the device activates after a set time)
- Hold and delayed activation.