The HiTech HI 300 TEL Calibratable Halogen Leak Detector is a specialized tool designed for detecting leaks in HVAC and refrigeration systems. Manufactured by HiTech, known for their high-quality products, this model is equipped with advanced technology for precise and accurate detection of halogen leaks. The ability to calibrate the detector ensures reliable performance, making it a valuable tool for HVAC technicians and professionals in the refrigeration industry.