Feature 1Designed for counting continuous wave signal comes from two-way radio and mobile phones. 2Also counts digital signal generated by GSM, CDMA and wireless remote control. 3Can achieve auto switch off, single button control, one button with all functions. 4With collapsible whip antenna, with stable performance and high reliability. 5Used for frequency testing of car radios, frequency testing of marine radios, frequency testing of radios for hotels, communities, properties, etc.Condition: 100% Brand NewItem Type: Portable Frequency CounterMaterial: ABSColor: As Pictures ShownApplication: Used for frequency testing of car radios, frequency testing of marine radios, frequency testing of radios for hotels, communities, properties, etc. .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Portable Frequency Counter(Without Battery)NoteThis product does not carry electromagnetic, customers need to prepare a 9V 6F22 battery, remove the back cover, install the battery before using this product.