Inverting Relay

How it works

• It does the opposite of what comes in. Its output goes off when its input comes on, and on when its input goes off.
• Its output starts on at the beginning of the run, as if its input were off.
• Like other relays, it waits a short moment before passing a change on.
• Together with a twin button, it lets you build any logic.

Tips

• Use it to turn something off when a button is pressed.
• Remember its output is already on at the start.

Where you'll meet it

You first meet it in level 137, Stop Press, in chapter 14, Smart Circuits.

Works with

• Button
• Twin Button
• Fan
• Relay
• Timer