This product is a testing instrument designed to measure the frequency of wireless remote controls, displaying the results clearly on a digital screen. It can also test the performance of infrared sensing and allows for easy frequency adjustment when setting up remote controls.Features: - Premium Material: The housing is made of durable plastic, providing resistance to drops and wear for long-lasting use. - Digital Display: Equipped with a 4-digit digital display for radio frequency measurement, enabling clear reading of test results. - LED Light Design: Built-in LED illumination for improved visibility in low-light environments. - Indicator Light: Features an infrared input indicator; a red light indicates proper infrared signal transmission from the remote control. If the light is off, it may indicate a fault in the infrared emitter. - 9V Battery Power: Operates on a 9V battery (not included), offering reliable and extended operation time. - Wide Applications: Suitable for testing remote control frequencies, evaluating infrared sensor functionality, and adjusting frequencies during remote setup.Specifications: - Name: Infrared Frequency Tester - Color: Black - Material: Plastic - Battery: 1 x 9V battery (not included) - Test Range: 100 MHz - 1 GHz - Operating Temperature: -10C to 40C - Relative Humidity: Less than 80% - Storage Temperature: -20C to 50C - Storage Humidity: Less than 85% - Item Size: 150 x 75 x 30mm / 5.91 x 2.95 x 1.18in - Item Weight: 205g / 7.23oz Package Contents: 1 x Infrared Frequency Tester Note: Light reflection and differences in display screens may cause slight variations in the color shown in images. Measurement error is +/- 1-3cm.