DescriptionTest frequency range: Within 500mhz get high precision, more than 500mhz test results for reference only! Test frequency type: RF radio frequency, such as walkie-talkie and other wireless devices. At the same time can also be measured cable frequency! How to use: Power on to test. Board comes with adjustment capacitor, you can manually calibrate!Feature- Color: As shown - Material: plastic - Size: 7 x 4 x 2cm - Operating voltage: 9 V - Test frequency range: Within 500 mhz get high accuracy, test results of more than 500 mhz - Type of test frequency: RF radio frequency, such as walkie-talkie and other wireless devices. at the same time can also be measured frequency cable! - how to use: connect to test. plate comes with capacitor adjustment, you can calibrate manually!