Features:Wide Application: It can be used to test the frequency of the remote control and display it clearly. It can also test the quality of the infrared induction. It allows you to easily adjust the frequency you want when formulating the remote control.High-quality Material: The case is made of strong plastic material, which is drop-proof, wear-resistant and durable.9V Battery Power Supply: Built-in 9V battery with large capacity and long service life.Digital Display: 4-digit display of the RF microcomputer measuring instrument, the measured frequency is clear at a glance.LED Light Design: The instrument is equipped with LED lighting, which is more convenient to use in dimly lit environments.Indicator Light: Equipped with an infrared input indicator, the red light indicates that the infrared output of the remote control is transmitting normally; if the indicator light is not on, it indicates What You Get: 1*Car Remote Control Frequency Detector, 1*9V Battery, 1*User Manual. Specifications:Item name: Car Remote Control Frequency DetectorModel: CNBJ-501Color: Gray-blackTest ranges: 100M-1GHZWorking conditions: -10 to 40Relative humidity: 80%Storage conditions: -20 to 50Relative humidity: 85%Item size: 149.6*76.2*29.3mm /5.88*3.00*1.15inItem weight: 205g/7.23ouce Note: Light shooting 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 +/- 10-30mm. Return Policy All of our items come with a 30-day free return policy. If you need to return, please contact us, let us know the detailed problem and send us some pictures for confirmation. We reserve the right to refuse any returns for objective reasons. Shipping Policy All of our items are shipped free with tracking numbers. Orders will be shipped within 3 working days upon receipt of payment. Most orders will be shipped within 1 working day. In most cases, shipping takes 8-12 working days.