The Zebra Instruments Zebra-Stat ZS-2 HVAC Diagnostic Analysis Tool is a thermostat install kit designed for HVAC professionals. Made of plastic and metal, this unit from the United States allows for easy and accurate diagnosis of HVAC systems. With the model number zs-2, this tool by Zebra Instruments is a reliable and efficient addition to any HVAC toolkit, providing valuable insights for maintenance and repair tasks.