TORK 5403A 120V Contactor with Turn-Lock Photocontrol
https://nsiindustries.com/product/tork-5403a-120v-contactor-with-turn-lock-photocontrol/
TORK turn-lock photocontrol light sensors provide a simple way to control roadway or commercial exterior lights based on the ambient light level. Automatically control lighting circuits using a sensor designed for human eye response.