This would have been an easy fix for them during manufacturing-make the tab a bit taller to accommodate most other brands of CR2450 batteries, but it's frustrating that any standard CR2450 won't fit (and that it's not clearly stated elsewhere). They must have tested Panasonic and Duracell and found that they fit correctly. The reason is, apparently, that the edge of the positive side of these batteries is a bit shorter than those on the Panasonic one that came with the device, and so the small metal part in the sensor that is supposed to make contact with it doesn't actually make contact. Not knowing this before it died, I purchased two Energizer batteries, which do not work. SmartThings says Panasonic or Duracell is required, but you can't see this until you remove the existing battery and see it printed inside the battery compartment itself (it is on their website also, but it is *not* in the manual). One note: when the battery dies, you'll need to be careful about what *kind* of CR2450 you replace it with. All things considered, this is still a good sensor and works well with SmartThings (and presumably any ZigBee HA system). This model is also much thinner and a little smaller than the first generation, but neither is particularly large. Note that, unlike the first gen sensor, this one only has the option of battery power there is no USB power option. However, the lithium coin-size battery (CR2450) it does use lasts longer than most alkalines have for me-mine just died after 16 months of use, which is much longer than any other sensor I've used (though the Iris sensors I haven't had for that long yet are still going strong and I'd expect a similar life from them). The only disadvantage is that unlike my first-gen sensor, this one does not use a common household battery size. Unlike my first-generation sensor, this one has the added benefit of also measuring temperature, which I previously used a multisensor to do. It detects motion when present and (unlike some others I've tried) does not trigger a lot of false alarms for me. I've had good experiences with previous SmartThings motion sensors, and this one is no exception. I wanted to add another and so I got this one (the third-generation, I think-2015 version). I've had SmartThings for almost a couple years now and am still using a first-generation motion sensor that came with my kit. These system works incredibly well in my 5,000 square feet house! BTW I have my home completely installed with Smartthings I have 4 multipurpose sensors, 2 gen 5 sirens, and 3 motion sensors.
I attached pictures bellow to see how installed mine on the walls. But the I knew the smartthings quality and features would be way better. I could go a cheaper way by ordering ecolink.
#Smartthings says im away install
The only issue I have is that it can be hard to install since it a square (especially in corners) I did find a away around that by taking lots of command velcro strips and adding onto them till it will stick to the wall without falling. I do like how these have a temperature reading on it, so I can tell the temperature when I am away. So if you put it in the corner of the wall it most likely will cover the whole room. I decided I needed another one for my kitchen so I ordered it off amazon and got 2 day shipping :) I really do like these motion sensors, they are really hard to trick. So far I have three Smartthings motion sensor, I previously order two from the smartthings website because they were on sale. Reviewed in the United States on June 12, 2016
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