Sorry none. I have a Xiaomi coming and can let you know how that one does if you're interested. You're in California right? So not in cold temps? And I mean COLD, like 40 or lower.
I also have one of the new SmartThings multi-sensors, but not getting vibration or XYZ motion sensing at this point. @mike.maxwell is looking into that. I have it paired with Wink right now to see if it receives any firmware updates. Anyway, so far (and we're only talking 4 days with no activity) the battery has not budged. So that's not a true test of anything other than to say it at least does not at this stage seem to be a ridiculous battery vampire.
Yes, under-mounted and does well to detect a shock when the door opens (the latch is pretty solid, so it takes some force to dislodge the door). It helps that the Monoprice has an adjustable sensitivity pot.
I previously used an ST zigbee sensor that was too sensitive and I couldn't adjust it. Even with a lot of false acceleration reports, the battery therein was good for six months.
From the undermount, there is a small metal lip that possibly disrupts the radio signal back to the front door; but it's mostly clear LOS. It's about 40 feet to the front door. Outside the door is a Z-Wave device that may or may not be repeating.
48 hours from a fresh battery and the DH reports 50% battery. When new, the battery showed 3.28 volts. I pulled it and tested it now at 2.92 volts. IOW, it's going fast.
After 8 days, having started with a new battery, the voltage has dropped to 1.9v, so, dead. I've brought it into the house near the hub and am sacrificing a new battery (starts at 3.28v) to see if distance makes a difference.