The question of what motion sensors to use outdoors is a good one, in fact you’ll probably find a dozen or more threads in the forums discussing it already.
If you want a quick answer take a look at the following:
I have a PEQ motion sensor similar to this one (https://www.amazon.com/PEQ-3305-P-Motion-Sensor-White/dp/B00P8839DY )
It is for indoors, but I was wondering if anyone uses a similar PIR motion detector outside? I want to put this under my deck near the front door. So it will be out of direct sunlight and rain. The deck is also covered so i don’t think the sensor will get too much weather exposure. Any advice? Also what is any experience of using a PIR motion detector through glass?
If you want an in-depth detailed discussion, see the FAQ:
I am looking for outdoor motion sensors to monitor my yard.
I bought a pair of the Aeon Labs Aeotec Z-Wave Multi-Sensor and am quite unhappy with them. Even on the lowest sensitivity setting it randomly sends alerts, some perhaps due to clouds changing the lighting (even though PIR is not supposed to be susceptible to this) and others I can’t explain at all. With several false alerts a day this thing is just useless. The Smartthings Motion sensor works great, I have some in my house, but it is indoor rated only. The Schlage / Nexia motion sensor is also indoor use only.
I am hoping someone has come across an outdoor rated motion sensor they have been able to pair with the Smartthings hub.
As far as the ring doorbell, there is an official integration:
https://support.smartthings.com/hc/en-us/articles/214288206-Ring-Doorbell