The BACnet Testing Laboratories’ Working Group (BTL-WG) released BTL Test Package v18.0, which contains updated testing procedures to be used by manufacturers to pre-test products for BACnet compliance, and to test devices qualifying for BTL Certification. With this release of the BTL Test Package, test coverage has been extended to include most functionality contained in BACnet Protocol Revision 18, along with some functionality from later Protocol Revisions, including BACnet Secure Connect.