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by rawicki 4532 days ago
The webpage mentions 915 MHz (America) / 868 MHz (Europe) radio. This is a part of ISM band and the most popular radio for low power internet of things. There are some microcontrollers with those radios integrated, for example TI CC430. As far as I recall, there is no standardised protocol stack on top of that.
1 comments

It's almost certainly ZigBee then:

https://en.wikipedia.org/wiki/ZigBee#Radio_hardware