Schematic symbols of relays.
Electrical_symbols_library.svg
SPST-Switch.svg
SPDT-Switch.svg
DPST-symbol.svg
Electrical_symbols_library.svg: User:FDominec et al.
SPST-Switch.svg: Iainf 22:01, 3 July 2006 (UTC)
SPDT-Switch.svg: Iainf 22:01, 3 July 2006 (UTC)
DPST-symbol.svg: Iainf 23:02, 8 July 2006 (UTC)
derivative work: Moxfyre (talk)