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Actual product may vary from photos.
The Rinnai MC-502RC-1M/S has been discontinued.
Please call us for a suitable alternate product.

(800) 865-5931

Mon-Fri 8am-7pm, Sat 9am-3pm CT

This is a wireless upgrade from the MC-91 (MC-91 is a wired model inlcuded with water heater), which is perfect for remodels or retrofits where rewiring is difficult.  From basic temperature control to system troubleshooting, Rinnai's remote controllers will give you maximum performance and enjoyment from your tankless water heater system.  This package contains both the wireless remote and transceiver which are required for wireless control of a tankless water heater.


  • Radio frequency wireless primary controller
  • Moisture resistant plastic case
  • Use up to 4 touch pads with each Rinnai unit
  • Great for retrofit installations where wire runs are difficult
  • 98° to 140°F temperature range
  • In use indicator
  • On board diagnostics and safety monitoring
  • 12 Hour AM/PM clock
  • Battery life indicator
  • Call button allows users to contact another controller
  • Priority and on/off switches
  • 1"D x 4"W x 2"H
  • Uses 4 AA batteries
  • Approximate 65 foot signal range

In 2002 Alpine Home Air Products became the first company to sell heating, air conditioning and indoor air-quality products online. We have proudly served hundreds of thousands of customers, helping them save time and money by buying their products direct.