What do control unit outputs often require for additional safety?

Control unit outputs often require some protection from external spikes and surges to ensure consistent and reliable operation. This need arises because external electrical disturbances, such as voltage spikes from lightning strikes or power surges from equipment turning on and off, can potentially damage the control units or disrupt their functionality. By incorporating protective measures against these external influences, the integrity of the control systems is maintained, ensuring they operate as intended without failure or malfunction.

While battery backups and surge protectors are important for providing power stability and reducing the risk of damage, they serve different primary functions. Battery backups are mainly used for maintaining functionality during power outages, and surge protectors specifically guard against excess voltage primarily on power lines. Automation systems, while critical for operating control units effectively in a coordinated manner, do not directly address the need for safeguarding outputs from external electrical disturbances. Hence, the focus on the requirement for protection from external spikes and surges is essential for ensuring the reliability and longevity of control units.