（1）读卡器：不要安装在金属物体上，两台读卡器之间的距离不要少于30厘米，最好通过控制器供电。如果读卡器单独从外部供电，读卡器的电源请使用线性稳压电源（变压器），并且不能把直流的负极连接到交流的接地端。
(1) card reader: do not install it on metal objects. The distance between two card readers shall not be less than 30cm. It is better to supply power through the controller. If the card reader is separately powered from the outside, please use linear regulated power supply (transformer) for the power supply of the card reader, and do not connect the negative pole of DC to the grounding terminal of AC.
（2）网络适配器：和控制器之间的连接采用手拉手的方式。
(2) network adapter: the connection between the network adapter and the controller is hand-held.
（3）控制器：不带隔离的控制器，建议使用同一电源。
(3) controller: the controller without isolation is recommended to use the same power supply.
（4）锁：在安装磁力锁时，一定要使锁体和继铁板能紧密的结合，否则会出现吸力不够的情况。电插锁，在安装电插锁时如果需要开插孔，JDG金属穿线管 不锈钢链板 隔离墩模具 检查井钢模具 流水槽模具 阶梯护坡模具 护坡砖模具 遮板模具 注意孔径一定要够大，深度一定要够深，能让锁舌完全插入。锁舌不能完全插入，锁门后会出现锁舌不停的跳动或工作电流一直很大，锁体发烫的现象。
(4) lock: when installing the magnetic lock, make sure that the lock body and the relay iron plate can be closely combined, or the suction will be insufficient. When installing the electric plug-in lock, if the jack needs to be opened, the hole diameter must be large enough, and the depth must be deep enough, so that the lock tongue can be fully inserted. The locking tongue can not be fully inserted. After the door is locked, the locking tongue will continuously beat or the working current will be very large, and the lock body will be hot