The item in the image is a NOYAFA NF-604 Halogen Leak Detector.
Function: Designed to detect leaks in air conditioning systems, refrigeration units, and halon gas in fire extinguishing systems.
Sensitivity: Capable of detecting halogen gas leaks within a range of 0 - 1,000 PPM.
Alert System: Features audible, visual, and vibration alerts to notify the user of leaks.
Features: Equipped with a 10.5-inch flexible gooseneck probe for reachin