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1.Pure stainless steel mechanical rational structure enables its life to be more than 10 years. | 
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2. No longer install the electrical machinery inside the mortise, which facilitates the maintenance work. | 
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3. It is very easy to change batteries in the 
lock,just need several minutes on one 
lock. | 
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4. Use 9V extra power when lower power which is safe and convenient. | 
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5. Using 4 x 1.5V standard alkaline batteries. | 
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6. If the fingerprint is not input correctly, the handle is free handle; it can prevent the door from being opened by force,and prolong the service life of mechanism of lock. | 
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7. 
Fingerprint user capacity 150. | 
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8. Unlock ways: 
Fingerprint or 
Keypad or Mechanical key. |