Rinnai Ezconnect Cable Works With Sensei REU-EZC-2

FEATURES
Connect multiple Rinnai tankless water heaters together using the Rinnai EZConnect™ Cable. Using the EZConnect™ Cable will allow for more functionality and gives the water heaters the ability to work as a single hot water source.
Rinnai Product Category          Cascade Control
Product Height                           2
Product Width                            4.25
Product Depth                            7