the sensors are for the Heathkit ID-4001 and ID-5001 Weather Computers. They are untested and sold as is. They will need a new 8-conductor cable. have this very cool vintage heathkit wind guage unit for sale. There are two instruments, one is an arrow to tell which way the wind is blowing, the other is little cups that rotate to tell how fast the wind is. They would connect through wiring to another heathlit unit (not incuded). The arrow does not stay on, but when mou...nted it should stay on the unit. They are on the original bar and mounting piece that it came with. I will include photos of it up on the roof i got it from if the buyer is interested. I am not sure if it still would work but it is in great condition and is very unique. I do not guarantee that this item will work, it is being sold as is. I will take the wind guages off and ship them all seperately so they will not breakOn Dec-05-19 at 06:20:47 PST, seller added the following information:I originally said i would ship the itesms seperately, i have decided it would be better to keep the whole unit together instead of taking it apart to ship it.