1. Easy to Use: This is a remote control frequency tester, which can accurately test the remote control frequency with clear display. This allows you to easily adjust the exact frequency required to configure the remote control. 2. Accurate Display: The display of Electronic Infrared Frequence Measuring Instrument shows four red numbers with an accuracy of 0.01mhz, which can accurately measure the frequency of the remote control 3. Close-distance Perception Display: As long as you bring the Small Frequency Tester close to the tester within 10cm, it can accurately test your remote control 4. Wide Applications: Car Remote Controller Frequency Tester is suitable for Electric door controllers, car door anti-theft alarms and other remote controls, electric locks, garage doors; remote controls, access control, etc. 5. Satisfaction : If you have any issues, inquiries or need assistance, please to contact us directly. :ELECTRICAL Display Type:Digital Only Model Number:Key Infrared Frequency Tester Colour:Gray-Black Material:ABS Size:150x75x30 MM/5.9x2.9x1.1in Package Contents: 1 * Infrared Frequency Tester Only 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.