Q: The key does not respond after the tester is turned on

A:

1. Check whether the instrument "lock" is enabled. If it is enabled, it can only be used after unlocking;

2. Check whether the serial port /IO port is operating the device. When the serial port /IO port controls the device, the button will automatically enter the "lock" mode

If you can't solve the problem according to the above content, you can call Qingdao Ruijie Intelligent Instrument Co., LTD. After-sales service hotline 0532-58723003