Size: Lock Sizes (Y x G x D): 12, 48, 34, 15 cm; Internal area (y x g x d): 9, 27, 52 cm; U -shaped hook is 5 cm high, 4 cm wide; The switch box has a large interior area that can take 5 switches or 3 large switches; Cards, drivers and so onYou can also store it The key case has a sliding shutter cover and a rubber case to protect the combination dials from dust, rain, snow and ice; Place the keys in our 4 -digit combination key lock box ly For ease of switchless use, you can set up your 4 -digit combination and personalized password and reset, allow 10000 personalized combination code option; Share the spare keys ly with your loved ones and families at work at work or with your families; After the password is reset, it is better to take a photo to record it when there is no method to open the password when you forget the password Easy installation (including assembly kit): Metal structure for durability; Can be fixed to the wall with the screws given together or hang like a vine lock; Outdoors, houses, offices, schools, gyms, factories, construction sites and so onSuitable for The removable handcuffs portable switch allows you to easily hang anywhere, including the door handle, fence, railing, pipe without screwing or drilling; You can install the switch box on the wall with all assembly equipment and pre -drilled holes or you can fix it to any solid surface in the interior or outdoor places when you need it.