Password lock is with a series of open by numbers or symbols. Password lock is usually a combination of real and not just aligned. Part of the lock using only one turntable, the number of discs or rotating cam locks; password lock is also some rotation, a few of the dial ring engraved with numbers, directly contributing to the internal mechanical lock.
1, no keys, no power, no batteries, no waste pollutants.
2, all the mechanical structure, can withstand considerable adverse external environment, using a wide range.
3, simple operation, unlock relatively short time, the average unlock time is about 15 seconds.
4, high-volume real password security performance, the probability of exploratory unlock almost zero.
5, the structure is simple, robust and reliable.