Using existing Home Security System (Honeywell, Vista, etc) Sensors with Smartthings

Obviously, the guy has no clue how sensors are wired in the “old-school” security system and what resistor are really for. Connecting sensors to digital inputs will work, but it’s a naive approach to say the least. :sunglasses:

Hmm, speaking from a place of total ignorance here, what would be the better approach?

I am trying to understand how Kendrick did what he did here, I even bought a SainSmart Board and a SmartThings Shield hoping to try this myself, but its a bit intimidating since I have never monkeyed with a security panel nor an Arduino kit before.

Professional alarm systems use analog inputs that can detect three distinct states: open, close and tamper. Sure, you can wire sensors to digital inputs and forgo resistors, but your alarm won’t be able do detect tamper condition.

I have tried this exact setup, but I can only get it to work either via the panel, or just the ecolink sensor. I cant seem to have it wired to both like you do.

I don’t require my Siren for my existing alarm and am going to use the 12V volt line off the panel that was originally going to the siren and attach a schlage door sensor. Then when siren was originally triggered, sensor would just send me alert instead. I understand the Schlage sensor cannot have 12V going to it. Do I have to install a relay? Or can I just use a resistor? A resistor seems much simpler. What Relay do I buy? Or what size resistor do I buy? Electrical knowledge…0. I run Nexia HA. Thanks everyone. I know there is a lot of discussion on relays and resistors here but not what types or sizes.

I really like this idea of using the Fibaro universal sensors. I have a Napco system that came with the house (it is fairly new) but doesn’t seem to be very friendly to integrate with any outside system. I’d really like to make use of all of the existing door, window, & motion sensors from that system in ST but still keep the alarm monitored.

I’ve read the manual for the sensor and it seems to do exactly what I want. Where can one buy these Fibaro sensors? I’ve searched and can’t seem to find them anywhere (maybe I’m not searching for the right thing).

You can purchase at Amazon; here’s the link:

if you try please publish the results; I would like to do as well but don’t have enough expertise and my panel is a Moose z1000(about 25 years old)

Not sure where you are, here’s a couple of sources in EU:-

I’m in US and I think zwave uses different frequencies here so the UK version wouldn’t work for me?

Based on what their website says here:

Select products are avalable at a limited quantity prior to our full release in several weeks.

Maybe it will be available soon in the US? I’m not sure how old that text is.

Chad, I am in the US also. I have looked at the fibaro and talked to them, as of a few week ago they do not have plans to support the US frequencies.

I see the last update was a few month ago, in new developments?

Let me set the stage for few more questions …
About a month ago I updated my Honeywell alarm to cell technology, since I was discontinuing my land line. I am in good with the person who monitors and was straight up about the limitations on Tuxedo. I am more interested in security than HA. Well not that I have played with HA, I really like it. Current my biggest hole is it does not support multi-channel devices. Of course it would be nice if it supported IP devices and Echo, but Tuxedo has some voice commands, but my installer suggested to turn voice commands off till the next update. He gave me a smoking deal on the control, thermostat, and garage door interface. I have added several light devices. Now we have purchased a new house, that was built about a year ago and is on the market because the owers were transferred.
It is a clean slate, no smart devices, including thermostat, and no alarm.

Still I would like a monitored alarm, but would like a more mature controller. Reading this tread release-honeywell-ademco-vista-20p-integrationI am going to stop here for now and see what responses there are:

I just moved into a house with a fully wired DSC system and am going to be looking into how I can smart-ify it. :slight_smile: It looks like the EVL-3 is a good way to go but I don’t think I can use it with my panel, which is a DSC Alexor ( since that’s not in the list of compatible panels. Does this sound accurate? If so, I guess I’d need to upgrade the panel to a model which can take the EVL-3 (or 4) and then I’d be good to go. Am I missing anything?

No, you can’t. Only DSC PowerSeries panels are compatible with Envisalink.

I’m almost in the same situation as you. At this point, I’m wondering if there’s an integrated panel out there that would be cheaper than the DSC + EVL combo

Hi all, I know this is an old thread, but I wanted to thank you all for the discussion and ideas here as it was really helpful to me in my project. Like the OP, I wanted to connect the wired door contact sensors and motion sensors in my house to SmartThings.

I ended up succeeding by using a NodeMCU ESP2866 development board, hooking up the wired contact sensors to the GPIO pins on the board, and programming it to post to SmartThings any time a sensor state changed. Works like a charm!

I wrote up a brief description here: Connect wired alarm system sensors to SmartThings with a NodeMCU ESP8266 [deprecated]

The code is here on Github:

It consists of 3 parts:

  1. Lua code for the NodeMCU
  2. Device Handlers for the cloud-connected sensors
  3. A SmartApp to receive the HTTP requests from the NodeMCU

This is my very first SmartThings development project and also my first time programming a NodeMCU. I’m really happy with the results, and looking for any feedback/criticism. If there’s enough interest I’d be more than happy to write up some more detailed documentation and package it up a little better for a community release.

I wonder if this may be a solution, documentation on the Leviton Vizia RF + Z-Wave Plug-In Serial Interface Module seems hard to come by, but may be a solution., combined with the ELK M1 Gold, and the M1 Gold Z wave interface Anybody experimented with this?

I have a Honeywell LynxR2 but can upgrade to a Vista 20P. All my sensors are Honeywell 5816 wireless sensors. My question is: Can I use the envisalink device along with my ST when the wireless sensors are not hard wired into the 20p?