Provide 16 sectors alarm output and 8 road system state output

Series 2300, the linkage of the host module.

This new module increases the relay parts,

so that users on the outside of the linkage alarm,

lighting and other equipment,

don't need to buy separate relay,

to install and use the user has brought great convenience.

Because modules are completely independent of external power supply,

no contact with the motherboard power supply,

so the external power supply voltage and polarity is arbitrary