This high-quality ADD/SUB REPEATER 1:1 D/A PROP. is an essential component for any HVAC service technician looking to improve their system's performance. Manufactured by a leading brand in the industry, this repeater is designed to accurately and efficiently convert analog signals into digital signals, making it easier to monitor and control your HVAC system. With its durable construction and reliable performance, this repeater is a must-have for any professional looking to optimize their HVAC system's functionality.