Humanity HM-C1-4V video multiplexer is able to transmit 1~4 channel forwarded video signal, one Ethernet and one bidirectional RS485 data over fiber.

One extra service slot is offered to realize customize services.

Service	Description	Services/slot
Data(option)	Bidirectional RS485	4channel
	Single direction RS485(forward/reversed)	4channel
	RS232	4channel
	Bidirectional RS422	2channel
	Single direction RS422(forward/reversed)	2channel
Audio(option)	Bidirectional audio	4channel
	Single direction audio(forward/reversed)	8channel
	Bidirectional stereo audio	2channel
	Single direction stereo audio(forward/reversed)	4channel
Contact closure/key(option)	Bidirectional contact closure	4channel
	Single direction contact closure(forward/reversed)	4channel
Telephone(option)	4channel telephone	4channel