The Fieldpiece JL3LC Job Link Wireless Large Pipe Clamp Probe is designed for HVAC and refrigeration professionals. This clamp probe is compatible with pipes ranging from 3/4" to 4 1/8" in diameter, allowing for versatile use in various applications. The wireless feature enables convenient and efficient monitoring of temperatures without the hassle of cords, enhancing ease of use during service and maintenance tasks. With a compact size of 4 inches in length and width, this Fieldpiece probe is a practical and reliable tool for gauging and probing tasks in the HVAC and refrigeration industry. No box.