This is a well built mechanical limit switch. Some reviews have complained about its inferior quality, but this isn't an industrial Omron switch that costs over $100 or more, it's less than 1/10th the price, so why compare at all? If you are on a budget this is a good choice. The resistance is typical of a mechanical switch; I was able to get a decent 0.1 ohm reading on all three. Like all limit switches on modern equipment, use them as a sensor rather than a load switching device. Since this can work with 0.4a it might be tempting, but just don't do it. Use a pullup or similar on the microcontroller and it will work great. I was surprised by the high actuation force, but the specs definitely say it. I measured the force range from 300g to 900g (depending on the length of the lever). Specifications are available on the manufacturer's website (google Moujen Switch).
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