The C500 KeySafe is made of heavy gauge stainless steel and a thick zinc-alloy shell. It has a double wall construction. A stainless plate around the buttons adds additional security and is scratch and fingerprint resistant. The heavy duty locking mechanism uses a long-travel bolt, making it extremely pry-resistant. A clutch mechanism prevents the handle from being forced open. If the C500 is locked and the handle is turned with force, the handle slips and turns easily without opening. Just turn the handle back to the closed position until it clicks to re-latch the handle.
The overall size of the KeySafe is 14.3 centimetres (6 inches) in height, 7.9 centimetres (3¼ inches) in width and 6.4 centimetres (2½ inches) in depth. It weighs 1.8 kilograms (4 pounds). The interior measures height 7.9 centimetres (3¼ inches) in height, 5.1 centimetres (2 inches) in width, and 2.2 centimetres (1 inch) in depth. There’s enough space to store up to 5 Yale or Chubb type keys.