Nilfisk BA410 Battery Floor Scrubber 24 Volt DC vacuum motor solenoid by Albright.
This is operated by the rocker switch on the console which in turn switches on the vacuum motor.
SAFETY WARNING! All electrical parts should ONLY be fitted by an electrically COMPETENT person.
Maximise the saving on postage and buy several Puregiene toilet rolls a box of Tissues and some soap or maybe some packets of dustbags, or a hose or a new floor tool, or some other accessories!
At the moment, standard postage within Australia is capped at a maximum of $20!