switch on

verb switch on

• activate — If a device or process is activated, something causes it to start working.
• activize — to make active
• bestir — to cause (oneself, or, rarely, another person) to become active; rouse
• bestirred — to stir up; rouse to action (often used reflexively): She bestirred herself at the first light of morning.
• call up — If you call someone up, you telephone them.