The Wieland Z-4-I-8-R is one of the company's fan-out terminals, which are used for retrofitting heating and cooling systems. The Z-4-I-8-R is designed to easily connect to 4 inputs and 8 outputs, making it suitable for wiring boiler, air conditioner, and other HVAC components. The terminal has a max temperature rating of 140°C and is designed to provide extra space for cabling when precision wiring is required.