The REED C-380 is a handheld refrigerant leak detector that senses CFC, HCFC, and HFC refrigerant gases using an ionization sensor, giving an audible alarm plus a tricolor LED indicator that responds faster as it nears a leak. It has a flexible 15-inch gooseneck probe for reaching tight spaces, adjustable sensitivity, and runs on 4 AA batteries for roughly 40 hours. No field calibration is needed, and it ships with a reference leak source and carrying case.