The Distribution Panel is a switch controlled communication bus that can be wired to eight Aprilaire Model 8870 thermostats. This allows thermostat communication (transmit, receive or both) to be turned on and off at one convenient location which simplifies installation and trouble shooting. Each thermostat station on the distribution panel has an on/off switch for power. This allows isolation of any one thermostat to simplify troubleshooting. Order one Distribution Panel per eight thermostats.