Check the listing for details. Rinnai RWM200 Rinnai Wireless Module.. Condition: New. Listed at 141.34 USD. Professional installation required; call 84-GO-Rinnai for assistance. Connect anywhere to your Rinnai tankless water heater using local WiFi and Rinnai Central App Activate recirculation schedule Adjust water temperature Check real-time status Receive Maintennce Alerts Activate vacation mode for energy and money savings Homeowners can experience the ultimate in accessability, convenience, and control For use with Rinnai Central app for iPhone and AndroidProfessional installation required; call 84-GO-Rinnai for assistance. Connect anywhere to your Rinnai tankless water heater using local WiFi and Rinnai Central App Activate recirculation schedule Adjust water temperature Check real-time status Receive Maintennce Alerts Activate vacation mode for energy and money savings Homeowners can experience the ultimate in accessability, convenience, and control For use with Rinnai Central app for iPhone and Android