Noritz remote controls are not wireless. Buy this 26 ft. wire in order to put the remote at a more convenient location in your home. The RC-CORD26 or the RC-CORD10 is required to connect the remote control to compatible Noritz heaters.
The RC-CORD10 10 ft. cord is included with most Navien water heaters, except the NR50, NR66 Series, NR71 Series, NR98-DVC, and NC199-DVC models. This RC-CORD26 replaces RC-CORD10 when you need to place your remote controller further away.
These are insulated cords with the appropriate connectors for a simple installation to your Noritz tankless.
Here is a list of compatible heaters:
Fully insulated cord with the proper connectors for asimple installation with Noritz tankless water heaters