The photo control shall be a locking-type control with a solid state photo sensor and a bimetal thermal switch. Switch operation shall have a rating of 1000 W tungsten and 1800 VA ballast at 105 to 305 VAC. The photo control must be designed with integral housing and lens. The photo control shall be equipped with standard 3-prong twist and lock type plug connection. Plug connection terminals shall be solid brass. The photo control shall be 100% factory tested and function within specified light levels. The photo control shall be agency certified and tested accordingly. The photo control shall comply with ANSI standards C136-10. The photo control shall be Intermatic model LC2100.