1. The cable from the card reader to the controller: It is recommended to use 8 cores to shield the multi-strand twisted pair network cable, and the data lines are twisted pair to each other. The length cannot exceed 100 meters. The shielded wire connects to the GND of the controller.
2. Button to controller wire: It is recommended to use two-core wire, and the wire diameter is more than 0.3 square millimeters.
3. Electric lock to the controller wire: It is recommended to use a two-core power cord with a wire diameter of more than 1.0 square millimeters. If it is more than 50 meters, consider using a thicker wire or multiple strands in parallel, or through the fine adjustment button of the power supply, to increase the output voltage to about 14V. The length should not exceed 100 meters, and it is generally controlled within 60 meters.
4. The line from the door magnet to the controller: it is recommended to choose a two-core wire, the wire diameter is more than 0.3 square millimeters, if there is no need to understand the opening and closing status of the door online or the door is not closed for a long time alarm and illegal entry alarm function, the door magnet wire can not be connected.
5. Between controller to controller: and controller to converter cable, it is recommended to use 8-core shielded twisted pair cable. The length of the 485 bus can theoretically reach 1200 meters, and it is recommended not to exceed 800 meters according to the number of controllers or the complexity of the communication environment. If it is more than 485HUB or repeater, we will improve the communication environment.
