I have about 40 hives in a spot just off a rural highway that would be really easy to load up and drive away with. There’s a gate on the short road but it would be really easy to drive around it since its just flat fields surrounding the old house site my bees are on. Fencing the area is out of the question since I don’t own the land and the owner needs to get tractors through there regularly.

What GPS device would alert me if the hives are moved or has a very small “perimeter” alarm? Bonus points for a cheap annual data plan and long battery life. I should be able to find a spot on the pallets or in the hives to tuck it/them that’s mostly out of the weather. So far I’m leaning towards YoGPS magnetic tracker at $50/ea and $120/yr contract but I haven’t heard back from them regarding minimum perimeter size.

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I live about a 1/2 km away so if I get an alert I should be able to show up almost immediately and interrupt any potential theft. Once they’re down the highway I’m unlikely to recover them in time to have them back to meet pollination contracts. Thanks for any help!