key-operated
adjectiveUK /ˈkiː ˌɒpəreɪtɪd/
US /ˈkiː ˌɑːpəreɪtɪd/
A key-operated thing needs a key to make it work.
The key-operated lock on the garden gate keeps the dog inside.
OTHER MEANINGS
2. Started or controlled by turning a physical key rather than by a button or code.
The old key-operated elevator needs an attendant to run it.
3. Designed to be unlocked or opened only with a matching key.
She keeps her diary in a key-operated drawer.
4. Powered or triggered by a key mechanism in a machine or vehicle.
The key-operated ignition makes the tractor hard to steal.