Fangrui Product Details 1. Woyo Pl001 Car Remote Control Tester 10-1000mhz Rf Ir Infrared Wireless Digital Frequency Tester For Truck Door Key Remote Clone (black) 2. The Remote Control Tester Has Been Developed To Assist With The Diagnosis Of All Types Of (ir) Infra Red And (rf) Radio Frequency Remote Controls. Woyo Remote Control Tester Can Be Used On Most Makes And Models Of Vehicles Including Trucks, Remote Control Models And Domestic Appliances. 3. Simply Place The Remote Control Below The Lcd Screen And Press A Button On Your Remote Key Fob, A Signal Will Be Sent To The Woyo Remote Control Tester And A Numeric Frequency Will Be Displayed On The Lcd Screen. 4. Note: 5. Remove Other Electronic Devices That May Interfere With The Frequency, Like Cellphone, Computer, Light, Led,etc. 6. Place The Car Key Remote Control On The Sensing Area Below The Display Screen And Press The Button To Test! 7. The Infrared Sensing Area At The Top Of The Tester!!! 8. The Control Tester Has Been Developed To Assist With The Diagnosis Of All Types Of (ir) Infra Red And (rf) Radio Frequency Remote Controls. It Could Let You Easy To Confirm If The Frequency Of New Keys Or Remote Controls The Same As The Old One. 9. Features: 10. Large Test Ranges: Woyo Remote Control Tester Can Be Used On Most Makes And Models Of Vehicles Including Trucks, Remote Control Models And Domestic Appliances. 11. Digital Display: Let You Easy To See The Tested Frequency Clearly. 12. Excelent Material: The Solid Plastics Material Made Up The Products, It Is Wear Resistant And Durability. 13. Battery Power Supplys: 9v Battery Can Use For Long Time, And Which Can Easy To Buy From Your Local Supermaket.