- Features dot matrix LCD for displaying the precise detected frequency channel?and transmission power- Detects frequencies between 1MHz and 2400MHz (2.4GHz)- Detects transmission powered between 0.1W and 50W- The higher the transmission power、 the higher the frequency detection accuracy- Powered by 3 x AAA batteries (sold separately)- Detection range depends on transmission power、 range for typical low powered transmission is 10 meters radius                                                                                                                                Dimensions: 3.74 in x 1.97 in x 0.98 in<br />Weight: 4.8 oz