This product is a wireless remote control frequency testing instrument that can test the remote control and clean operation; you can use It allows you to easily customize the function you need when formulating remote control management. Perfect gift for newborn parents, newborn mother, newborn father, baby shower, birthday, Christmas, festival and so on. Premium Material: The case is made of sturdy plastic, drop-resistant, io good quality. Digital display: 4-bit digital display of radio frequency microcomputer measuring instruments, visible quality test. LED light design: The instrument is equipped with LED lighting, which is convenient to use in low light. Indicator light: equipped with light input indicator, red light visible that the remote control output is normally emitted; If the indicator is off, it means failure, wire or other light emitter source. 9V Battery Power Supplies: Built-in 9V battery, large capacity and can long working time. Wide application: it can be used to check the frequency of the remote control and apply it; you can use It allows you to easily customize the function you need when formulating remote control management. Technical data: Name: frequency tester Material: plastic Battery: built-in 1*9V battery (included) Test Ranges: 100M-1GHZ Working conditions: -10℃ to 40℃ Relative humidity: < 80% Storage conditions: -20℃ -50℃ Relative humidity: < 85% Product Size: 150*75*30mm/5.91*2.95 * 1,18 inch Item Weight: 205 g/7,23 oz Package Weight: 215 g / 7,58 oz List of things to pack: 1 * Frequency Tester 1 * Instructions