This item must be installed by a certified locksmith or return may not be void.!!! 
Before ordering this item, you will need to determine if your safe uses a SWINGBOLT LOCK ASSEMBLY. If your safe has a deadbolt lock assembly or a different type, then this electronic lock will not work. We suggest that you contact the manufacturer of your safe to find out what type of lock assembly you have. 
Electrical parameters: 
Rated voltage: 6-9V 
Static power consumption: <30uA 
Undervoltage point: 7 ± 0.3V 
ADDITIONAL FEATURES: 
Product Name: Safe Lock 
Application: Gym, Cabinet, Drawer etc 
Unlock way: Fingerprint, Password