Timer switching with pull cord dimmer

[garyskyrme]

Hi,
New bathroom being installed next week. Have all the bits ready for installer including DIMPULL pullcord dimmer. He is supplying a timer fan. Dimmer manual says the switch can be used for fans - I assumed there would be an un-dimmed output to connect to the timer. There isn't.
Does anyone know what the likely voltage across the timer connections needs to be to trigger the timer?
Thanks for your help.
Gary

[Steve]

You need one with an un-dimmed output, any undervoltage might damage the fan.

[garyskyrme]

The fan itself will be powered direct; it's just the timer trigger I'm interested in.

thanks