The Safeguard 170 Series 120-Volt Low Water Cut-Off Control by HYDROLEVEL COMPANY is a reliable and efficient device designed for use in HVAC and refrigeration systems. Made in the United States, this control features cutting-edge technology to detect low water levels and automatically shut off the system to prevent damage and ensure optimal performance. With its durable construction and proven track record, the Safeguard 170 Series is a valuable addition to any commercial or industrial setting requiring precise control and protection. Has missing probe ( not included )