Wiring module that connects to "K" terminal on thermostat and separates into Y and G signals to equipment</br>Can be used in conventional and heat pump systems</br>Requiring one wire more than is available</br>Wire Saver for THX9000 Series Thermostats</br>Genuine Honeywell product</br>Used with THX9000 Series Thermostats</br>Color: Gray??  Easy push wire terminals that provide a secure lock with no need to screw in wires.</br>Can be used when 5 wires are needed and only 4 wires are available</br></br>Product Description</br></br>THP9045A1023?? Honeywell?? Inc.?? Honeywell THX9000 save-a-wire module 5-wire to 4-wire.   What if you're installing central air conditioning for the first time?? are installing a Honeywell Prestige thermostat and don't have enough thermostat conductor wires in the wall to do so? You'll want this module?? then. This wiring module connects to "minal on Honeywell Prestige thermostats and separates into "Y" and "G" signals at furnace or air handler equipment. Intended to be used in conventional and heat pump systems requiring one wire more than is available.</br><br/>http://www.amazon.com/gp/product/B0060ASWPEaas mo