Reddit reviews GoControl WNK01-21KIT Essential Z-Wave Home Security Suite

I think it's easier to search for minor inconveniences and annoyances around your house, then search for ways to automate it away.

I gotta watch out with this site or I'll end up in the non-automated poorhouse, but it's awesome for product discovery
http://www.smarthomedb.com/products

Since you mentioned OpenHAB, the supported technologies list is a good place to start a wishlist too
http://www.openhab.org/features/supported-technologies.html

I'm using z-wave for most of my devices, so the product database is full of devices that are more likely to be compatible
https://github.com/openhab/openhab/blob/master/bundles/binding/org.openhab.binding.zwave/database/products.xml

This forum thread is also great for seeing what other people have gotten working
https://community.openhab.org/t/collection-of-working-z-wave-configs/1407

Personally, I've had great luck with these devices:

Aeon Labs Aeotec Z-Wave Z-Stick, Gen5 Z-Wave Plus - ZW090 https://www.amazon.com/dp/B00X0AWA6E/ref=cm_sw_r_cp_awd_cIbCwbYMNV0A4

2gig CT100 Z-Wave Programmable Thermostat (White) https://www.amazon.com/dp/B008CQ4V3Q/ref=cm_sw_r_cp_awd_3IbCwbNFR9PQ6

MIMOLite - Z-wave Mulit-Input/Output Dry Contact Bridge https://www.amazon.com/dp/B00B6RZ7MM/ref=cm_sw_r_cp_awd_uKbCwbF1ZBAXK

GE12722 Z-Wave Wireless Lighting Control On/Off Switch https://www.amazon.com/dp/B0035YRCR2/ref=cm_sw_r_cp_awd_oLbCwbQCFR48K

GoControl WNK01-21KIT Z-Wave Essentials Wink Enabled Security Kit https://www.amazon.com/dp/B00XUXYSWU/ref=cm_sw_r_cp_awd_p5bCwbRY8TXQ5

I have an old ADT installed Safewatch pro 3000 alarm, and this ties it into OpenHAB really nicely.
http://www.alarmdecoder.com/

I'm comfortable pulling wires through the walls, so I use one of these for TTS playback from my OpenHAB box:
Elk ELK-70 Echo Speaker https://www.amazon.com/dp/B003XP1HZ6/ref=cm_sw_r_cp_awd_kZbCwb799TN4C

Driven by one of these:
Lepai LP-2020A+ Tripath TA2020 Class-T Hi-Fi Audio Amplifier with Power Supply https://www.amazon.com/dp/B0049P6OTI/ref=cm_sw_r_cp_awd_X0bCwb7MYGM47

A few scenarios might help with inspiration.

I have a sensor on my garage entry door that kicks on the laundry room light when the door is opened so I never enter a dark house with my hands full.

If it's 00:00 - 06:00 and any perimeter sensors on the alarm are tripped, all outside and main level lights come on at full brightness

I have a sensor on my garage door to send me an alert if it has been open for more than 15 minutes, and a camera and a mimolite to close it remotely

My wife works nights so I have a mimolite to disable the upstairs doorbell while she's sleeping during the day. It sends our phones alerts if the doorbell is rung while silenced

I had already been leaning towards creating an alarm solution through Wink and getting rid of my alarm company, but this has pushed me over the edge. Ordered the GoControl WNK01-21KIT Z-Wave Essentials Wink Enabled Security Kit and have already set up most of the shortcuts/robots/IFTTT stuff you mentioned. I'm only planning to start with Wink notifications for the alarm for now, but might set up phone calls for the smoke detector. Need to determine if I can get the Z-Wave sensors already installed to work with my system. Might save me some time/money.

I got one of the go control kits that comes with a motion and 2 doors for $42 off amazon and they work.
https://www.amazon.com/GOCONTROL-WNK01-21KIT-Essential-Z-Wave-Security/dp/B00XUXYSWU/ref=sr_1_1?ie=UTF8&qid=1479839716&sr=8-1&keywords=go+control

This would be your best bet, but you do have to know/learn how to get the code up and running on both the Arduino and SmartThings IDE, so maybe a bit intense for some. Plus they stopped selling it a while ago... I'm still mad I didn't buy more.

I've made a few customish sensors (i.e.: doorbell) with these: https://www.amazon.com/dp/B00XUXYSWU - they're relatively cheap, and it's super easy to add external sensors to them. You're stuck with the motion sensors, but I can always find a use for those. But on the contact sensors, just snip the hall sensor out to disable the contact feature, then connect your wired sensor to the provided terminals. Thats it, but If you're feeling ambitious you can copy the device handler in the IDE and edit it to represent what you're actually sensing. May find this handy if you're combining sensors or something similar (i.e. need to know all 1st floor windows are closed, not listed individually).

All that said, I would just stick to straight wireless wherever possible, because the mesh network is strengthened with each device you have scattered around the house. But if you can find an Arduino shield, that would be wayyy cheaper since you could use one device to integrate all pre-wired sensors.

Most zwave sensors are battery powered. Actually, I haven't seen wired door/window sensors outside of proprietary security systems, though I'm sure there's something out there.

This Wink Essentials Kit will work with any zwave hub, and is pretty much the best bang-for-the-buck for zwave sensors right now. I have three of them on my OpenHAB setup, and haven't had any problems.

For a water sensor, I've been keeping an eye on the Aeotec Water Sensor but I haven't purchased one yet.

Everything I've linked is battery powered.

http://www.amazon.com/gp/product/B00XUXYSWU

This also works great, and you get 2 sensors and a motion sensor for the same price

That's a nice price. Too bad they apparently don't work (based on the other article).

The GoControl ones work, but cost more, unless you get them in a kit.

Home Depot link

Apparently, they're rebranded under a lot of names. Monoprice sells them, too. Honestly, I wonder what's inside the one you linked.

I picked them up for $41.23 (check the price history on camelcamelcamel) in this bundle on Amazon

... and these, also at Home Depot, look suspiciously similar.

I'm still experimenting with the motion sensor; once you understand how it sleeps between motion alerts, it seems to be working fine. I installed it at the recommended 6', enabled small pet, and it still detects my cats. I'm entertaining raising it or trying the large pet setting.

The sleep value is programmable with a compatible system, but can't be programmed (currently/if ever?) with Wink. You can override it completely via a jumper (always on), but at cost to battery life.

It also includes a temp sensor that says it updates every 1 degree, but the Wink app will often say it's been 68 for five or more hours; no way the temp in my house is THAT stable. I'm left wondering if it reports temp when there's no motion in the room.

These window/door sensors also have TWO contacts; the first one is obvious (the included internal sensor); there are terminals inside that let you add another external sensor contact; it can sense two doors/windows from the one remote, but Wink doesn't (currently/if ever) respond to the code from the external sensor. I hope they will, as I want to use another on my french door refrigerator. One wireless remote monitoring two door sensors.

I'm using one right now on our freezer, and was able to hide it fairly well, too, especially after removing the magnet from its plastic housing that makes it 5 times the size (and any powerful enough magnet would do the trick); our freezer door has never closed very well, without an extra push ... and is often left .5" - 2" open until someone notices hours later after the temp has risen to 17, it's been running all day trying to get back down to 0, and everthing inside is slushy and covered in frost; we now get an alert if it remains open 3 minutes and 5 minutes.

I plan to get more of those kits from Amazon and use the motion sensors as vacancy sensors to turn off lights in empty rooms.

... and here's a comparison review I just found.

Its just a zwave motion detector. I took it apart so that it doesn't detect 180 degrees of motion. I just put some white tape on the internal sides of the translucent lens. There is still a bit of light that can come through, but I have that limited to a smaller degree. This is because sunlight can sometimes set the sensor off. I have it secured to my porch ceiling looking straight down. It seems to be very accurate. I suppose if you entered my porch from behind the bushes, you could bypass it, but thats not really the point. I wanted more accurate notifications vs 100 a day. I am using this https://www.amazon.com/GOCONTROL-WNK01-21KIT-Essential-Z-Wave-Security/dp/B00XUXYSWU/

I'm not really having issues with it, its not supposed to be outdoors, the only issue seems to be that after freezing, the temp sensor is inaccurate. That's not really a problem for me. I just hide the temp sensor for that particular device. I originally bought these units because I have a wink system, but I am getting away from that. Really any motion detector would take care of business.

https://www.amazon.com/GOCONTROL-WNK01-21KIT-Essential-Z-Wave-Security/dp/B00XUXYSWU?ie=UTF8&ref_=cm_cr_arp_d_pdt_img_sims

This is by far the best deal that's been going on for a long time now, so more like standard price (though it goes up to $42 sometimes.)

Not ST brand but compatible and well reviewed. Great price for all three sensors (2 open close and 1 motion). $38 right now.

https://www.amazon.com/GOCONTROL-WNK01-21KIT-Essential-Z-Wave-Security/dp/B00XUXYSWU/ref=sr_1_2?s=hi&ie=UTF8&qid=1484259929&sr=1-2&keywords=wink+go+control

I imagine these would work. I use them on my front door.

I'm using a MyQ, it's more expensive but works great.