Hold the car remote frequency tester, which supports both radio frequency and infrared mode detection. It can verify the car key signal and frequency. It comes with a front lighting device, and the casing is shock-resistant and wear-resistant. It is equipped with a hanging rope to prevent it from falling. It has a built-in 9V battery, and the operation is simple, small, and portable. It is suitable for daily maintenance of car key replacement.

The device is equipped with four high-definition digital displays. The digital readings are clear and prominent. Even in a dimly lit garage or workshop, the frequency values can be directly read. The measurement results are accurate and stable with minimal error. It can quickly determine whether the remote control's transmission frequency is standard and precisely identify the root causes of problems such as key malfunction, shortened distance, and weakened signal. The body is equipped with two detection modes. The radio frequency detection mode can read the remote wireless frequency, and the infrared detection mode can check the transmission status of keys with infrared function. This one device can be used for both purposes, making its application scope wider.This handheld digital frequency counter is specially designed for the detection and calibration of various vehicle remote key systems. It measures within the frequency range of 100 MHz to 1 GHz, perfectly suitable for the signal detection of the majority of cars and SUVs on the market. Auto repair shops and individual car owners can always keep it on hand for routine use, easily completing the verification of key frequencies and the investigation of signal quality. 
The front of the device is equipped with independent switch buttons and a lighting button, with a built-in front LED light. During night operations, no additional hand lamps are needed for assistance. It is more convenient to check the buttons and interfaces. The entire device shell is made of thick and wear-resistant engineering plastic, featuring a tough, slip-resistant, and impact-resistant design. It is unlikely to be damaged by daily carrying and handling. A portable hanging strap is also provided on the side, allowing for hanging and holding, preventing the key from slipping during use. When going out for maintenance, it can be carried without any burden.
The device is powered by a built-in 9V rechargeable battery. The battery compartment is simple and convenient to assemble and disassemble. When the battery runs out, it can be replaced by itself without the need for cumbersome charging. It can be turned on and tested at any time. The device layout is simple and understandable, and there is no need for complex learning to operate. Even beginners can quickly master the usage method.
Whether it is troubleshooting the lack of signal or weak signal in the remote key, matching new keys to check the frequency, or batch testing the quality of vehicle control remote keys, it is very suitable. The compact and portable design does not take up much space, and is easy to store. With its precise measurement performance, solid workmanship, and rich and practical functions, it has become an indispensable portable tool in automotive maintenance and key matching work.