A hidden shut off switch. Last Halloween, came out to find some kids (or their parents who like to push buttons) retracted our power jack leaving the stab jacks supporting the front of the trailer.
I know this has been strung out over a winter, but.the Husky Brute 4500 is great on my heavy tongue wt tt especially using the square equalizer type bars. The quick-byte coupler requires close height when backing into or out of it. So far so good at good price.
Last two campers (26 footer and 27 footer) were fitted with the cheapest 3500lb hitch I could find, i.e. a refurbished unit on ebay for $79. Worked great for years on both trailers. http://www.ebay.com/itm/like/3017929...&ul_noapp=true
Don't forget to consider hard wiring a switch and a fuse from the electric jack to prevent a dead battery when that LED light that is too dim to see in daylight kills your battery.