It seems there are some differences on how some mobile devices handle their GPS locations with other apps on that device therefore your experience with a geofence can be different depending on the device and service you use.
We suggest using a minimum radius of 150m but if you are experiencing your geofence triggering when you are inside your fence, or delays in scenes triggering when entering or leaving, we suggest you take it to 300m or more. This will give your control system time to get the signal that you have entered or left your geofence.
It is pretty easy to do this.

1. Open your Vera Mobile app on the mobile device you use to leave and enter your geofence.
2. Select "Menu" (Top Left)
3. Select "Geofence"
4. Tap on the pencil icon to the right of your geofence.
5. Use the slider to adjust the radius of the geofence or type the number you would like the radius to be.
   In this case we just type 300 in the box to the left of the slider.
6. Click "Save" on the bottom of the geofence page.
7. Your done.

​If you would like to see how big your fence is now become, hit the "Back" (Top Left) after saving and you can see the map and how big your fence now is in relation to the roads near your home.

If you would like to turn on of off notifications when entering and leaving your fence, check the "Notify" box.
Make sure the "This is my home" box is checked if you would like mode changes based on actions with this geofence.

This entry will show you how to get your Smartthings hub to work with the dual relays we use our lineup of Z-Wave Outdoor Motion Lighting. (Monoprice 11990 & Vision ZL7432)
First let me say that I am not a ST user nor do we have a ST hub, so we have no way to test our products with this controller and these instructions but apparently they do work.

Apparently the Smartthings hub is not equipped to work with these relays that have multi channel command classes built in them. Our entire lineup of Outdoor Z-Wave Motion Sensing Lights went to version 2 a few months back and now uses a multi channel command class to communicate with the controller and for some reason, ST does not know how to handle this without a new handler.
First, let me thank JustInTime over at Github for putting this together.
Here is his post.
​
Here are the instructions.
Custom Device Type for Monoprice 11990 Dual Relay Module
The code in this repository will interface with the Monoprice 11990 module in a way that allows both switches to report near real-time status back to the SmartThings Hub. SmartThings ships with a "Z-Wave Device MultiChannel" device type that will (sorta) work, but you'll quickly find that switch 2 doesn't update it's status in the SmartThings app. This device type will do just that.
The bulk of the work for this was done by Eric Maycock for the Philio PAN04 module. All I did was remove the parts that didn't work with the Monoprice module and publish it. Special thanks go to him for all of his work.

Installation:
Install the Custom Device Type.
First, we need to install the custom device type into your SmartThings account. Don't worry, this wont hurt a bit.

1. Go ahead and install the module, and let SmartThings set it up as a "Z-Wave Device Multichannel".
2. Copy the code from monoprice-11990-dual-relay-module.groovy into your clipboard.
3. Log into your developer account at https://graph.api.smartthings.com/ You can sign up for a new account if you don't already have one. This site is referred to as "the IDE" from here out.
4. Click "My Device Types", or "My Device Handlers", then "New Device Type", then click the "From Code" tab.
   
5. Paste in the code you copied to your clipboard, and click the "Create" button.
6. From the resulting page, click the "Save" button, then click the "Publish" button, and click "For Me" from the drop down.
   
7. You've now installed the custom device type, now you need to associate it with your Monoprice relay.

Associate the Custom Device Type with the Monoprice Relay Module. Once the custom device type is published in your own library, we need to actually associate it with your Monoprice device. We'll be doing all of this work in the IDE as well.

1. Click "My Devices". Click on the name of your Monoprice device. The device will have "Z-Wave Device MultiChannel" in the "Type" column.
2. Click the "Edit" button.
3. On the resulting page, click the "Type" dropdown. Scroll all the way to the bottom, and select "Monoprice 11990 Dual Relay Module".
4. Click the "Update" button.

Congratulations, you're done setting up the device! Go ahead and test it out by toggling the switches from the SmartThings app as well as from the switches themselves. Make sure everything's working as planned before moving onto the SmartApp installation.
Install the dual relay adapter SmartAppSmartThings doesn't really allow you to interact with the individual switches on a multichannel device very well. So, we'll be creating two "virtual switches". These virtual switches will look like a normal on/off switch to the SmartThings app, but in reality will just be associated to one of the two switches on our relay.
Installing the virtual switches.

1. From the IDE, click "My Devices", and click the "New Device" button.
2. In the "Name" field, add whatever you want this switch to be called, ie "Front Porch Light"
3. Leave "Label" and "Zigbee Id" blank.
4. For "Device ID", pick an ID that you haven't used before. I recommend using a UUID for this purpose.
5. Under "Type", select "Simulated Switch" from the dropdown.
6. Under "Version", select "Published".
7. Pick the correct values for your setup under "Location" and "Hub".
8. Leave "Group" blank.
9. Repeat steps 1-8 for your 2nd switch.
   

Installing the SmartApp

1. Copy the code from dual-relay-adapter.groovy into your clipboard.
2. From the IDE, click "My SmartApps", then "New SmartApp", then click the "From Code" tab.
3. Paste in the code you copied to your clipboard, and click the "Create" button.
4. From the resulting page, click the "Save" button, then click the "Publish" button, and click "For Me" from the dropdown.
5. You've now installed the SmartApp to your account, now to set it up!

Configuring the SmartApp

1. Now, grab your phone, and open up the SmartThings app.
2. Touch the "Marketplace" icon in the lower right of the app -- it looks like an asterisk.
3. Touch the "SmartApps" tab at the top of the page.
4. Touch "My Apps", it's at the bottom of the list.
5. Touch "Dual Relay Adapter".
6. You'll be prompted with the question "Which Dual Relay Module?". Here, select whatever you named your relay (the one with two switches).
7. For the "Virtual Switch to link to Switch 1?" and "Virtual Switch to link to Switch 2?" questions, just pick the virtual switches that we created above.
8. Assign this instance of the SmartApp a name.
9. Touch "Done"

Congratulations, you've done it!!! You can now assign your virtual switches to a room, and toggle them on and off just like normal light switches. They can be used in other SmartApps and Routines, just like any other on/off switch.

We have had some reports that the SmartThings hub is not seeing the status of the Enerwave ZWN-RSM1S. We use this relay in our Z-Wave outdoor motion lighting products.
If this is true in your case, we recommend you visit this page and see if this fix, can fix the issue.
Please use at your own risk as we have no way to test this potential problem solver.
Let us know if it helped you as we would like to know to recommend it to others.

Items used in this demo.
Cree
http://www.amazon.com/gp/product/B00KQXWDSS?keywords=cree%20light%20bulb&qid=1458694654&ref_=sr_1_15&sr=8-15

Philips
http://www.amazon.com/gp/product/B00JXAJ9DC?psc=1&redirect=true&ref_=oh_aui_detailpage_o02_s00

Dragon Tech Z-Wave Dimmer WD-100
http://www.007systems.com/dragon-tech-light-switch-dimmable-wd100.html

Intermatic CA600 - Discontinued

007 Systems Lighting Accessories
http://www.007systems.com/lighting--fan-control.html