Navien 30017406A Navi-link Conversion Kit, NCB
 
NaviLink makes it easy to communicate with your Navien systems anywhere internet service is accessible.
The NaviLink module attaches easily to any new or existing* Navien tankless water heater, combi‐boiler and boiler.
Existing installations may require the purchase of a new main PCB and front control panel.
This conversion kit allows NCB-series Combi-boilers manufactured before March 22, 2016 to be compatible with the NaviLink wireless controller.
Works with NCB series units.
3 year warranty from date of purchase.