Andover Controls Corporationannounced that their entire line of BACnet devices have been BTL-listed by the BACnet Testing Laboratories as "BACnet-Advanced Application Controllers (B-AAC). The BTL, which is part of the BACnet Manufacturers Association (BMA), tests the BACnet functionality of a product to a set of requirements that are based on ASHRAE Standard 135.1P. Only products that meet these stringent requirements are eligible to receive a BTL listing and to display the BTL Mark.