Fine grinding and fine welding bright edge process;
With automatic reset function, after the pedestrian reads the valid card, if the pedestrian does not pass within the specified time of the system, the system will automatically cancel the pedestrian’s permission to pass this time; 4) The LED indicator light indicates that the valid card is green, and the illegal card is red;
The unified standard external electrical interface can be connected with various card readers, and can realize remote control and management through the management computer;
After the power is cut off, the channel is automatically normally open (in compliance with fire protection requirements), and automatically closed when it is powered on;
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