These photocontrols install on standard outdoor light fixtures and electrical boxes with 1⁄2"-14 NPSM thread or 7⁄8" knock-out holes for dusk-to-dawn ON/OFF control of outdoor lighting.
The K122 NEMA receptacles provide the connector interface for locking type photocontrols. They can be installed in the light fixture itself, or attached externally with the use of a mounting bracket (included).