The SPH-1 is a powered hub designed to allow multiple CO2 sensors and devices to be connected to the Carbon-X. For every CO2 sensors and / or device stations connected to the Carbon-x, the SPH-1 will “inject” power into those sensors and devices using the single RJ12 communications cable. This provides for a simple and clean installation of all sensors and devices connected to the Carbon-X without requiring separate power sources for each device.