Wiring board, coupler module, and communication device

A wiring board comprising:

• a first coupler;
• a second coupler;
• a first switch;
• a second switch;
• and
• a plurality of external connection terminals;
• wherein
• each of the first coupler and the second coupler includes an input terminal, which is one end of a main line, an output terminal, which is another end of the main line, and a coupler terminal electromagnetically coupled to the input terminal;
• the input terminal of the first coupler is connected to the first switch;
• the input terminal of the second coupler is connected to the second switch;
• and
• the plurality of external connection terminals include:
• a first terminal group including a first antenna terminal connected to the output terminal of the first coupler, a first monitor terminal connected to the coupler terminal of the first coupler, and a first spacer terminal disposed between the first antenna terminal and the first monitor terminal;
• and
• a second terminal group including a second antenna terminal connected to the output terminal of the second coupler, a second monitor terminal connected to the coupler terminal of the second coupler, and a second spacer terminal disposed between the second antenna terminal and the second monitor terminal.