设计要求(黑体小四，1.5倍行距，段前0.5行)

1）密码预先在内部设置，可以设置任意位密码，这里采用6位十进制数字作为密码；

2）密码输入正确后，密码器将启动开启装置。这里密码器只接受前6位密码输入，并以按键音提示，多余位数的密码输入将不起作用；

3）允许密码输入错误的最大次数为三次, 密码错误次数超过三次则进入死锁状态, 并发出警报

4）报警后，内部人员可以通过按键SETUP使密码器回到初始等待状态；

5）密码器具有外接键盘，可以用来输入密码和操作指令；

-Design requirements (bold Primary Four, 1.5 line spacing, paragraphs are 0.5 lines) 1) password in advance of the internal settings, you can set any bit code, where a 6 digit decimal number as a password　2) enter the correct password, the password device will start The device. Here are only receiving the password password before 6, and in tone tips, extra digit password will not work　3) the maximum allowed number of password input error is three times the number of errors more than three times the password to enter deadlock state , and the alarm　four) alarm, internal staff can SETUP button to return to the initial password device wait state　5) device with an external keyboard password can be used to input passwords and operating instructions