Third, the characteristics 1. Since the machine uses a computer control, only 16 on the touch panel switch, Can easily complete a variety of testing capabilities, changing the old security apparatus must be shut down following a power switch between multiple switches in order to change the power type of defects, easy to operate. This machine also has a self-test, error function, greatly facilitate the inspection and maintenance. 2. The machine is equipped with a comprehensive self-test, self-protection, boot the machine immediately after the vote Into the self-test, overload and over-range, the protection circuit will cut output quickly concurrent silent, light reminder, greatly reducing unnecessary losses caused by misuse. 3. The high degree of machine intelligence, only the press of a button, you can measure all the parameters of general-purpose relays, and automatically print all the data, so that your test operation from cumbersome freed. 4. This machine has features screen display unit, from the display can clearly reflect the Machine's working condition. 5. All the data in the machine used to print Chinese characters, such as "pull-in voltage," "off voltage", "normally open pull-time" and so on. 6. Measuring AC "live contact", the machine from the computer through a special circuit judge, or contact the exchange of zero-crossing movements to test the accuracy.