Features: 1. Accurate and Reliable: The tester provides accurate and reliable frequency testing and infrared signal detection of remote control devices. It helps users identify any problems or faults with remote controls. 2. Detection range: The effective testing range of this infrared frequency tester is less than 5cm, the closer it is to the testing area, the more accurate the measurement. The car key frequency is generally divided into 320M HZ; 434 MHz; 868 MHz. 3. Easy to use: Simply place the remote control near the tester in the testing area, press the power button on the remote control and the tester will display the frequency value, accurately measuring the frequency. 4. Input indicator: Pressing any button on the remote control, the indicator light flashes red, indicating that the infrared output is working properly. If the indicator does not light up, this indicates that there may be a malfunction or damage to the infrared emitter. 5. Convenient lighting: The infrared frequency tester is equipped with LED lights on the front, making it easy to use in low light conditions, ensuring visibility and accuracy during testing. 6. Application: Applicable to all models of electric door keys and controllers, car anti-theft alarms and other remote controls, electric locks, garage doors, remote controls, access control, etc. Specifications: Item Type: Frequency Tester Material: ABS Test Frequency Range: 100M HZ - 1G HZ Working Conditions: -10 - 40 Working Relative Humidity: 80% Storage Conditions: -20 - 50 Storage relative humidity: 85% Battery model: 6F22 9V (battery not included) Application: Remote key infrared frequency tester is an instrument for testing the frequency of wireless remote control. It can test the remote control frequency and display it clearly; it can also test the quality of infrared induction; It is convenient to adjust the frequency you need. Package List: 1 x Frequency Tester 1 x Manual