YES.

We strongly recommend the use of Isolation Switches, when installing your DC Ceiling Fans, especially for dwellings with more than one Ceiling Fan installed.

The reason for this is in order to put the receivers into pairing mode the power to the fan needs to be turned off and when power is restored the receivers in the fan automatically go into pairing mode. This allows you to reprogram your ceiling fans yourself.

If isolation switches are not installed an electrician may need to be called out to reprogram the ceiling fan(s) if there is more than 1 in the dwelling.