I couldn't find anything about these being a supported sensor either, I picked one up last week for $15, the almond shows it as two unsupported/unknown devices, holding the 1 and 2 buttons down makes every sensor in the mesh turn on, holding down 3 and 4 makes every sensor turn off. other than that it's a paperweight.
If the securifi team wants one for testing I'll gladly ship mine out.