Lost $340 on a box of 50 wireless sensors that don't pair with anything I own
Bought them at a supply shop in Denver last month because they were on sale. Got home, opened one up, and the frequency is 433MHz. Everything on my truck runs 345. The shop won't take them back since the box is open. Anyone know a good use for 49 paperweights? Or a cheap way to test frequency before I buy next time?