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The whole Lock is made of ABS engineer plastic
User sets his or her own random codes
Master key for emergency door opening and retrieve the lost code.
Keyless and no power supply
Application: All kinds of locker material (ABS plastic, metal, PVC and wood) in school, family and club
Outside size
The thickness of the steel material door should be less than 1mm
As for the wood or any other similar material locker, the thickness of door should be less than 20mm.



