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 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 -computer measuring instruments, you can see the tested frequence 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, 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 adjust the frequency you need when formulating the remotes control.Specifications:Name: Infrared Frequency TesterColor: blackMaterial: plasticsBattery: 1 x 9V battery (no included)Test ranges: 100M-1GHZWorking conditions: -10 to 40Relative humidity: Less than 80%Storage conditions: -20 -50Relative humidity: Less than 85%Item size: 150 x 75 x 30mm / 5.91 x 2.95 x 1.18inItem weight: 205g / 7.23ouncePackage Contents:1 x Infrared Frequency TesterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.