Please tell me what this symbol means:

Strange element

  • \$\begingroup\$ Is it simple relay or something more specific? \$\endgroup\$
    – Serj.by
    Jan 24, 2018 at 14:29
  • \$\begingroup\$ Given it is rotated 90 deg, I would guess it is some component with a transfer function of a unit step (threshold). Do you have any context to it? \$\endgroup\$
    – Eugene Sh.
    Jan 24, 2018 at 14:31
  • \$\begingroup\$ Thanks for comment. As for context - not much of it. There is few switches, few other relays etc. Basically this element receives 0V or 5V depends on switches states. \$\endgroup\$
    – Serj.by
    Jan 24, 2018 at 14:35
  • 1
    \$\begingroup\$ Please post that context even if there is not much of it, it will help. \$\endgroup\$
    – Eugene Sh.
    Jan 24, 2018 at 14:36

1 Answer 1


Spent 30 minutes looking through all types of the relays and trying to find their symbols.

The device on the ciruit is relay, called Memory relay, here's the link to Wikipedia Commons. However this page does not have any articles assigned to it, thus I would question the reliability of the information.


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