Several Questions and Answers on Passive Electronic Locks

Traditional mechanical locks have gone through nearly a hundred years of history, and their functions and performance have almost been interpreted to the extreme. However, it still cannot meet modern people’s requirements for high reliability, high security, informationization, and intelligence. Since the advent of semiconductor (transistor) technology in the late 1950s, people have applied this technology to locks and invented A variety of electronic locks with rich functions.


“Passive electronic locks” is a new important branch in the field of electronic locks. The biggest difference between it and traditional electronic locks (tentatively referred to as “electronic locks”) is that the inventor adopts the concept of reverse thinking. The necessary working power of the electronic lock is moved to the electronic key, thereby completely solving a series of inherent problems in the traditional active electronic lock, such as: consume a large amount of battery, and need frequent Maintenance, complex structure, generalization, low standardization, high failure rate…

Therefore, “passive electronic locks” are nowadays a maintenance-free electronic lock with the highest reliability, the most energy-saving, environmentally friendly, and cost-effective. It has been increasingly valued by people of insight in the industry and favored by users.

Q: What is a “passive electronic lock”?

A: Simply put, it is an electronic lock that does not require a power supply (battery) in the electronic lock (top). General applications need to work with an “electronic key”. The appearance and installation methods are very similar to general mechanical locks.

Q: The simple working principle of passive electronic locks?

A: When the “active electronic key” is in contact with the “passive electronic lock”, the power source (battery) and the unlocking electronic code on the “active electronic key” are simultaneously imported into the “passive electronic lock” of the built-in microcomputer. If the password matches, the lock can be opened.

Q: When did “passive electronic locks” begin to enter the market?

A: China 1998; United States (Videx, Inc.,): 2001; Western Europe (Medeco, Inc.,): 2002.

Q: Is “passive electronic lock” easy to use?

A: The simple software version of “passive electronic locks” can be issued, abolished, and reset by itself without using a computer. Multi-level unlocking keys or master keys (that is, one key to open multiple locks) can be fully mastered in 3 minutes The setting and use method is almost the same as the use of mechanical locks with “active electronic key”.

Q: What other typical advanced functions of “passive electronic locks”?

A: The advanced software version of the “passive electronic lock” can not only authorize all the functions of the simple version through a computer or network, but also obtain more information and functions, such as: which key (that is, who), when to open, Which lock has been closed (where); limit the effective time period for key unlocking; remotely control unlocking and monitor the open and closed status of the lock…

Q: Does the battery in the “electronic key” need to be replaced frequently?

A: There are two types. One type of key uses a rechargeable lithium battery. It can be charged with a USB port on a computer or a universal USB port charger. It can be unlocked thousands of times after charging, and the battery life is 3 to 5 years. The other type of key uses a disposable lithium battery. Two button-shaped lithium batteries can unlock more than 10,000 times, and battery life is more than 5 years.

Q: What is the environmental adaptability of “passive electronic locks”?

A: “Passive electronic locks” are more adaptable to the environment (temperature, humidity, vibration, shock, waterproof, dustproof, anti-electromagnetic interference…) than all current “active electronic locks” developed by our company. “Passive electronic locks” are even better than mechanical locks in terms of waterproof performance and can be widely used in demanding industrial environments.

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