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Electromagnetic relays used in automobiles are important components in vehicles; they have three main functions, one of which is to act as a switch； Second is the overload protection function that cuts off power supply ； Third is the fault power-off protection function. Since they are used in cars, relays must also withstand harsh conditions such as vibration, extreme temperatures, and the like. For the safe operation of vehicles, it is essential to test the performance and reliability of electromagnetic relays used in cars. In accordance with the \"Automobile Industry Standard of the People’s Republic of China QC T 695-2018: Testing Specifications for Relays Used in Automobiles\", automotive relays must undergo tests such as basic electrical properties (equivalent coil resistance, operating and releasing voltages, contact voltage drop, voltage withstanding capacity, insulation resistance, etc.), operating, releasing, and rebound times, voltage transient emissions, temperature rise, and random vibration, in order to verify their performance. Due to the large number of testing items, if multi-functional testing equipment can handle multiple tests, it will **reduce testing costs**. The Yokogawa oscilloscope recorder DL850E features 20 different modules, a storage depth of up to 2G, a 500G hard drive, isolation between channels, a maximum sampling rate of 100 MS/s, and 16-bit resolution. It also boasts various advanced triggering functions and a dual capture function, making it highly suitable for both transient testing and durability testing. It is an ideal instrument for measuring automotive relays. The measurement tasks that the DL850E can handle include: operating and release voltages, contact voltage drop, operating, release, and bounce times, temperature rise, random vibration, etc. The oscilloscope recorder DL850E can assist users in testing various parameters of automotive relays, saving a great deal of labor and time. If you have needs for testing electromagnetic relays for automobiles, please contact Yokogawa!