6-30V input voltage range, support micro USB 5.0V power supply, convenient to use
Time adjustable range: 0.1s to 999 minutes continuously adjustable
The function of stop key (STOP button) and opto-isolator enhance the ability of anti-interference; reverse connect protection function protects the module from burning out
After five minutes without any operation, the digital display automatically turns off, and you can press any button to wake it up
Clear LED display, easy to check the value