This HI/LO # SELECTOR, SLAVE UNIT is a reliable and efficient product from a well-known brand in the HVAC industry. It is designed to work seamlessly with other HVAC systems and components, making it an ideal choice for service technicians who need to maintain or upgrade existing systems. With its advanced features and durable construction, this selector unit can help improve the overall performance and efficiency of any HVAC system. Whether you're looking to replace an old unit or install a new one, this product is sure to meet your needs and exceed your expectations.