This kit includes 1 art. UT1020 – Ultra simplebus1 audio/video module, 3 art. UT9211M – single metal Ultra button, 1 art. UT9162 – flush-mounting frame for 2 Ultra modules, 1 art. UT9221M – full metal Ultra cap, 1 art. UT9200 – Ultra call button module, and 1 art. 1595 - 120-23VAC/33VDC power supply.