Power: PCA9547 8-Channel I2C-Bus Multiplexer with Reset with I2C Interface

Good day, I’m hoping you can help me out.
I am using your PCA9547 8-Channel I2C-Bus Multiplexer with Reset with I2C Interface device and I have my sensors connected. I am using an Arduino Uno connected to the multiplexer to power it, however, the sensors don’t seem to receive any power. Do I need to use an external 12V power supply or is this a software issue where I need to activate the sensors? My sensors do not receive any power, the light does not power on.

Kind Regards
Pieter

Yes, you will need to connect external power(12VDC nominal) to the multiplexer to provide power to sensors.