Features 1. Accurate and Reliable: The tester provides accurate and reliable frequency testing and infrared signal detection for remote control devices, helping users identify potential issues or faults. 2. Detection Range: The effective testing range of this infrared frequency tester is within 5 cm. For the most accurate results, place the remote control close to the testing zone. Common car key frequencies include 320 MHz, 434 MHz, and 868 MHz. 3. Easy to Use: Simply place the remote control near the tester in the testing zone, press a button on the remote, and the tester will display the frequency value, enabling precise measurement. 4. INPUT Indicator: When any button on the remote is pressed, the indicator light flashes red, confirming that the infrared output is functioning correctly. If the light does not flash, the infrared transmitter may be faulty or damaged. 5. Convenient Lighting: The tester features LED lights on the front panel, improving visibility and usability in low-light conditions. 6. Application: Suitable for various remote control devices, including car keys, electric door controllers, car alarm systems, electric locks, garage door openers, and access control systems. Specification Item Type: Frequency Tester Material: ABS Test Frequency Range: 100 MHz - 1 GHz Working Conditions: -10°C to 40°C, up to 80% relative humidity Storage Conditions: -20°C to 50°C, up to 85% relative humidity Battery: 6F22 9V (Battery not included) Package List 1 x Frequency Tester 1 x Manual