MYPIN Pro Advanced Portable AC Freon Halogen Refrigerant Gas Leakage Leak Detector Tester with High Sensitivity, Hvac Tool 7 Level Alarm Health and Safety Assistant, R410A R134A R134a R12 R22 R600a CFC HFC Hvac Tool Excellent sensor with HIGH SENSITIVITY,3g/yr (0.1oz/yr), detect All KINDS OF halogenated refrigerant 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