The Aiphone NHR-30K from the NHX Series is a 30-call add-on PC board designed for 51-80 station systems. This expansion board enhances the capacity of the NHX-30G add-on selector, making it ideal for larger setups. It's perfect for managing calls from common area restrooms or staff call locations, ensuring seamless communication throughout your facility. Upgrade your system with the Aiphone NHR-30K for efficient call annunciation and expanded functionality. Don't miss out on improving your communication network, purchase yours today!