How to set a new password for an electronic password lock

1. Press the power button at the bottom of the outer panel once and the' *' button three times, and the buzzer will make a long sound.

2. Enter the old password and press the' # key to confirm. The buzzer will sound for a long time and the LED will flash.

3. Enter the new password 6 ~ 12 digits and press the' # key to confirm, and the buzzer will sound a long sound.

4. Enter the same new password again and press the' # key to confirm.

What is the principle of electronic password lock?

Electronic password locks can be traced back to the 1930s, but they were suitable for some special purposes. Civil electronic password locks began to develop in the 1950s, and were widely used in Europe and America. Electronic password lock consists of mechanical module, integrated circuit, electronic components, arithmetic and other parts. The core of the electronic password lock is the chip, which gives various instructions through the program algorithm, and other parts cooperate to complete the password setting, storage, recognition and display, drive the electromagnetic actuator and detect its driving current value, receive the alarm signal sent by the sensor, and send data.

The core principle of password lock is also easy to understand. The MCU receives the instruction (password) input by the user and compares it with the password stored in EEPROM. If the instructions are the same, the driving motor is unlocked; If the instructions are different, an error will be prompted and the password will be re-entered. However, the number of trial and error can be set according to the algorithm (for example, the general number of rubs is 5). If the trial and error exceeds the set number of times, the chip of the password lock sends an alarm instruction to the intelligent monitor through the communication line, that is, it triggers an alarm and starts protection programs such as screen locking. At the same time, the chip will record the user's instructions and the reaction state of the chip as the basis for subsequent intelligent analysis.

As for the safety performance of electronic password lock, it is mainly embodied in two aspects, mechanical safety and password safety. At present, most electronic locks on the market are better than ordinary mechanical locks in the design of mechanical modules, so all types of electronic locks are similar in the safety performance of mechanical modules (except hotel locks, considering that hotels have special personnel on duty and monitoring systems, the safety requirements are not so high), so don't worry about this part, even if you worry again, the industry level will stop here at present.

Electronic combination locks in the market are generally 6-bit 12 keys, and the rest are Arabic numerals 0-9*** 10, so the sixth power cipher scheme of 10 can be deduced, that is, the trial opening probability is one in a million. As long as the user does not set the common password of 888888, under the alarm function provided by the password lock, there is no need to worry about the security of the password.

Electronic password locks are influenced by fingerprint locks in the family door lock market, mainly because there are old people and children, so it is more convenient and fashionable to use fingerprint locks. But some young users are more realistic and cost-effective, so password lock has become a good choice. In some important institutions, password locks will be more convenient and safer than fingerprint locks and induction locks (saving the trouble of fingerprint entry and keeping cards).