K3 Remote Key Frequency Tester With Display XDRT20 V2 Frequency Tester 100-999MHz Signal ASK FSK Detection Features: 1: K3 Tester | Frequency Detection Range: Supports multiple frequencies (100-999MHz) to for ensure compatibility with a variety of car keys. 2: Advanced Signal Detection: Includes infrared, key, for ignition coil and door handle signal detection for complete diagnosis. 3: Easy-to-read display: Provides clear on-screen display frequency readings to simplify the diagnosis process. 4: Frequency Discrimination: Able to distinguish between ASK and FSK signals to improve diagnostic accuracy. Specifications: Part Name: K3 Tester Material: ABS Plastic Color: Black Size: As shown Design Style: Stylish and portable device with easy-to-read LCD display Use and Purpose: Frequency detection, signal strength analysis and diagnostic testing of various automotive components Performance Features: Accurately detect frequencies between 100-999MHz Applicable People: for Ideal for car enthusiasts, mechanics and technicians K3 Tester Test Device 1. Frequency detection (supports frequencies 100-999MHz) 2. Infrared signal detection 3. For key detection 4. for Ignition coil continuity detection 5. Door handle signal detection 6. ASK/FSK frequency differential detection Q: How to use? A: Simply place the remote control on the "RF" block and press the button on the keychain, the signal will be sent to the K3 tester, and the digital frequency will be displayed on the LCD screen. Q: is the frequency of the remote control key always different? A: Rolling code technology: Most modern car remote control keys use rolling code technology. This means that every time you press a button on the remote control, the signal sent changes. This technology is designed to improve security and prevent signal interception and replay attacks. Each time a button is pressed, the remote generates a new encrypted code that has a mathematical relationship to the previous code but cannot be predicted by an eavesdropper. FM: Although the operating frequency of the remote key (such as or 433MHz) is fixed, frequency modulation technology is used when transmitting data. This means that the actual transmitted signal will undergo slight changes around the base frequency to encode different information. This modulation makes the transmitted signal sound different every time. Package Contents 1 * K3 Tester Note: 1: Please allow 1-2 cm error due to manual measurement, please make sure you do not mind before ordering. 2: Due to the difference between different monitors, the image may not reflect the actual color of the item _x000D_ _x000D_