Specifications include, but are not limited to: The stated amounts called for in this contract are approximate. If more or less equipment should be required by the County, the contract unit price will not be modified. 5.3.1 Three fully loaded eight phase traffic signal controller cabinets are estimated to be supplied by the vendor in a given twelve-month period. 5.3.2 One fully loaded four phase traffic signal controller cabinets are estimated to be supplied by the vendor in a given twelve-month period. 5.3.3 40 traffic signal controller units are estimated to be supplied by the vendor in a given twelve-month period. 5.3.4 20 All malfunction monitoring units (MMUs) are estimated to be supplied by the vendor in a given twelve-month period. 5.3.5 10 battery backup units are estimated to be supplied by the vendor in a given twelve-month period.