I remixed this so it is large enough to fit in any smart lighting module, be it ZWAVE, WI-FI Zigbee or bluetooth.  It also has standard size width holes to enable it to be easily mounted to your ceiling with 2 screws.  Screw the base into your ceiling / joist then ire everything up including your smart lighting module then just screw on the cap. Printed in PETG in case it gets warm but will print with what ever you need to.