These types of systems require little preventive maintenance (PM). To ensure the operation
of such security systems, a transmitter tester is required, to verify the operation of
any transmitter with the sensors throughout the unit. This type of test can be scheduled
annually. It is important to have available space, replacement circuit boards, control
panels, and nurse-call boxes for immediate replacement in the event of a malfunction. The
nurse-call system should be always active to ensure patient safety.