Car Keys Infrared Frequency Tester 100M-1GHZ 4-bit Digital Electronic Infrared Frequence Counter Test Instrument with Illumination Function This product is an instrument for testing the frequency of wireless remotely control, which can test the frequency of the remotes control and display it clearly; it can also test the goodness of infrared sensing; it allows you to easily adjust the frequency you need when formulating the remotes control. Features: Premium Material: The housing is made of solid plastics material, fallproof, wear resistant, and with nice durability. Digital Display: 4-bit digital display of radiofrequency microcomputer measuring instruments, you can see the tested frequency clearly. LED Light Design: The instrument is equipped with LED illumination, which is more convenient for using in the dim light environment. Indicator Light: Equipped with an infrared input indicator, the red light shows that the infrared output of the remotes control is normally emitted; If the indicator is off, means the infrared emitter failure, damage or other reasons. 9V Battery Power Supplys: Built-in a 9V battery, large capacity and can provide long service time. Wide Applications: It can be used to test the frequency of the remotely control and display it clearly; it can also test the goodness of infrared sensing; it allows you to easily adjust the frequency you need when formulating the remotes control. Specifications: Name: Infrared Frequency Tester Material: plastics Battery: 1 * 9V built-in battery (not included) Test ranges: 100M-1GHZ Working conditions: -10℃ to 40℃ Relative humidity: < 80% Storage conditions: -20℃ -50℃ Relative humidity: < 85% Item size: 150 * 75 * 30mm / 5.91 * 2.95 * 1.18in Item weight: 205g / 7.23ounce Package size: 160 * 100 * 50mm / 6.30 * 3.94 * 1.97in Package weight: 215g / 7.58ounce Packing List: 1 * Infrared Frequency Tester 1 * Manual