2-wire IP network switch, upgrade analogue intercom systems, super long transmission distance & good compatibility with existing lines makes it fit for most of old buildings. 48V power supply for NS-2
> Connects up to 6 2-wire IP intercom devices;
> Support network and power supply for R20A-2 or C313W-2 through 2-wire cable
> Support multi-level cascade through 2-wire cable
> Powered by 48VDC power supply (Not included)
> Installation: Rail mounting
