Specify environmental resistance to wear, dirt, moisture, corrosion and freezing, as well as physical attack

Specify extensive master keying capabilities with one key operation

Specify keying system options, profiles and security levels

Cylinders shall have no less than 10 million key combinations

Specify key to be restricted and cylinder and key system to be patent protected

Specify exclusive key combination code assignments

Specify locks to be capable of being rekeyed to a new key combination code if keys are lost or stolen