Hey @shhuang66. **Motion Detector (2nd generation) **has a smaller profile and is easier to mount on the wall. It also uses patented motion detection technology to detect intruders and ignore pets. You can learn more about the differences in our 1st generation of devices and 2nd generation of devices [here](https://support.ring.com/hc/en-us/articles/360040149572-FAQs-about-Ring-Alarm-2nd-generation-).
0
•
18-05-2020 11:36:46
•
Didn't find an answer ?
Log in or create your Ring account to post a question and join in the on the conversation.
Chelsea_Ring
Hey @shhuang66. **Motion Detector (2nd generation) **has a smaller profile and is easier to mount on the wall. It also uses patented motion detection technology to detect intruders and ignore pets. You can learn more about the differences in our 1st generation of devices and 2nd generation of devices [here](https://support.ring.com/hc/en-us/articles/360040149572-FAQs-about-Ring-Alarm-2nd-generation-).
0
18-05-2020 11:36:46
•