Refrigerant Leak Detector, Refrigerant, 0.006 oz/yr, For Use With All CFC, HFC, and HCFC Non-Flammable Refrigerants Including R12, R22, R134a, R404a, R410a, R502, R507 and Many Others, Voltage 100 to 240V AC Wall Adapter/Charger, 12V DC Internal Battery, Includes External DC Powered Wall Adapter, Rechargeable Battery