. </td></tr>
    <tr><td class="paramname">rtsPin</td><td>RTS signal GPIO number (-1 = not used) </td></tr>
    <tr><td class="paramname">ctsPin</td><td>CTS signal GPIO number (-1 = not used) </td></tr>
    <tr><td class="paramname">dtrPin</td><td>DTR signal GPIO number (-1 = not used) </td></tr>
    <tr><td class="paramname">dsrPin</td><td>DSR signal GPIO number (-1 = not used) </td></tr>
    <tr><td class="paramname">dcdPin</td><td>DCD signal GPIO number (-1 = not used) </td></tr>
    <tr><td class="param