1, no key to unlock the lock, ID card reader to the use of more safe and convenient; Patented design and manufacture of the lock, ID cards can not be copied, less than one in a million chance coincidence; 2, the lock using special steel alloys and ABS material manufacturing, the severity of moderate and easy to use; The lock system power consumption low, it is recommended to use alkaline batteries, batteries life expectancy of not less than 1 year or 6000 to open and close; When the reader bit light turns red, replace the batteries as soon as possible! Overall shape of the lock, no metal exposed contact position to prevent damage upholstery.