Hotel room management system hotel host

1. Description:

Adopt ARM master control,hardware TCP/IP chip;
1way 30A relay,9way 10A relay;
Built-in replaceable fuse;
Led display interface,intuitive operation,complete information;
Standard rail mounting;
With a slave expansion interface,resources can be infinitely expanded; 
3-way RS-485 bus;
A set of doorbell interfaces ;
16digital inputs with optocoupler isolation;
16-channels digital output,adjustable brightness when connected to backlight;

CE FCC RoSH

3. Need any details pls dont hesitste to contact me.