On the description section, it is indicated as "MPN: YRD210-ZW-605".
As I know, ZW refers to the Z Wave ability. (Zigbee is available on another model.)
I broke my key today, so I hope this arrives soon.
(Estimated delivery Tuesday, Oct 17, 2017)
Cheaper than the frontpage deals as I know.
$55 with current eBay 20% off coupon code, PCOLUMBUS2017
"This seller is currently away until Oct 08, 2017. If you make a purchase, there may be a delay in processing your order."
"222 sold" for now.