Here this low voltage button photocell switch, and it is use for low voltage or DC voltage work environment light fixture application scenario, to place low-voltage work on this fixture such as 12-24V sign light, 24v Neon light sign, and traffic light symbol,outdoor sign lighting and special in uncommon occasions public lighting.

this video reveal this type product, here 2 kinds type voltage 12v and 24v in jl411 series JL-411-12D, JL-411-24D. and another type controller the same function,  it is stand for Split type sensing part jl411r series, JL-411R-12D,JL-411R-24D.  may you by visit link :https://long-join.com/product/12v-24v-photocell-light-sensor-jl-411-series-long-join-brand/ , and you can look find specification details.