Lonsdor Remote Tester for 868mhz 433mhz 902mhz 315mhz

Lonsdor Remote Tester Radio Frequency (FR) Infrared (IR) can detect frequency as well as infrared working or not, which helps a lot in key programming and car maintenance. Lonsdor Remote Tester for 868mhz 433mhz 902mhz 315mhz  Lonsdor Remote Tester Radio Frequency (FR) Infrared (IR) can detect frequency as well as infrared working or not, which helps a lot in key programming and car maintenance. Features: 1.Wide range frequency 2. Accurate Data 3. Easy Operation  4. Screen Display  5. Portable Design   Notice: For custom's sake, there is no battery inside the package,please buy from your local area, thank you for consideration!   Frequency Test Range: 1.300MHz-320MHz 2.434MHz 3. 868MHz 4.902mhz  How to test the frequency? 1. Put the remote control close to the device 2. Press any button on the remote control 3. The indicator that turns on is the frquency   How to test infrared working or not?  1. Press the key 2. The infrared indicator turns on - good, off - bad Package inc