It is designed for counting continuous wave signal comes from Two-way Radio and mobile phones. It also counts digital signal generated by GSM, CDMA and wireless remote control. Specifications: Frequency Counter for two-way radio and mobile phone Frequency Range: 50Mhz to 2.4Ghz Distance covered: 8m for U-band and 5m for V-band Battery: 9V Color: Gray Dimensions: 9.4cm x 5.7cm x 2.3cm / 3.7” x 2.2” x 0.9” Net Weight: 112g Auto switch off Single button control With collapsible whip antenna 7 Digit LCD Display with signal meter One button with all functions.