I used it for a few winters to pre-heat my crane, it works as advertised, 100% reliable. I used a cheap cell phone with the min. plan as you never complete the call, just let it ring 3 times and hangup. WX tite box. A pager can also be used. I needed to switch more then 1800 watts, it's max, so I also had GI ammo box with a relay that could handle another 1000 watts, that's not included but let me know if needed and I could throw that in for another 25 bucks.
I quit screwing around and built a radiant floor heated building for my crane, like my plane has had for years, so don't need it anymore
