How can you tell if the relay is tripped?

You can tell if a relay is tripped by checking the status indicators, such as LED lights, on the relay itself, which may show an "on" or "off" condition. Additionally, you can use a multimeter to measure continuity across the relay's contacts; if there is no continuity when the relay is supposed to be closed, it is likely tripped. Finally, listening for a clicking sound when the relay activates can also indicate its status.