IMAGE&reg; Portable AC Refrigerant Gas Leakage Detector Leak Tester with high sensitivity 3g/yr (0.1oz/yr) Excellent sensor with high sensitivity,3g/yr (0.1oz/yr), Detects All KINDS OF halogenated refrigerants 14 inches (35.5cm) flexible stainless steel probe can reach to almost any tight space Single color LED display with 7-level leak alarm, Tricolor display of battery voltage(Green, Orange & Red) Real time sensitivity adjustment, RESET time sensitivity adjustment, One extra spare sensing tip included Package Included: 1 x Portable leak detector, 1 x Extra spare sensing tip, 2 x 1.5V battery, 1 x Full English manual