"securitas has worked with analog loudspeakers until now," says kampe. "with analog loudspeakers, there is always an uncertainty since there is no way to remotely detect if they are actually working correctly.

Write the above sentence using proper case.
"Securitas has worked with analog loudspeakers until now," says Kampe. "With analog loudspeakers, there is always an uncertainty since there is no way to remotely detect if they are actually working correctly.