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TORK 5237-UL Electronic Instant Response Turn Lock, On 1.3-1.7, Off/On Ratio 1.5:1, 105-305V, 1000W Tungsten, 1800Va Ballast,1000W Led

https://www.nsiindustries.com/product/tork-5237-ul-electronic-instant-response-turn-lock-led-photocontrol-longer-life/

TORK turn-lock photocontrol light sensors provide a simple way to automate street and highway lighting controls with locking-type receptacles. Use these sensors on lighting fixtures requiring an instant response to changes in ambient light level.