# Is it possible to connect a Cavius smoke detector (868mhz)? **URL:** \ **Category:** Devices\ **Created:** [May 15, 2020, 2:05pm UTC](https://community.homey.app/t/is-it-possible-to-connect-a-cavius-smoke-detector-868mhz/29910 "2020-05-15T14:05:06Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Hans\_de\_Bruyne](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/hans_de_bruyne/32/25207_2.png) [@Hans\_de\_Bruyne](https://community.homey.app/u/Hans_de_Bruyne)\ **Post date:** [May 15, 2020, 2:05pm UTC](https://community.homey.app/t/is-it-possible-to-connect-a-cavius-smoke-detector-868mhz/29910/1 "2020-05-15T14:05:06Z")
Hi, I’m new at Homey and I would like to connect my smoke detectors to create a new flow. I’m having a set of 4 Cavius detectors, working on 868 MHz. It was possible to connect them to my previous Homewizard system but I can’t figure out how to connect them to Homey. > **[Wireless Rookmelder 5 jaar - Cavius Nederland](https://cavius.nl/products/wireless-alarm-family/wireless-smoke-alarm-5-jaar/)** > > De expertise van CAVIUS heeft zich uitgebreid naar de wereld van draadloze technologie met een nieuwe rookmelder, speciaal ontworpen om aan de behoefte aan een veilig huis van het moderne gezin te voldoen. Je hele huis is nu onder controle. Het... Help is appreciated! Hans. ---
**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\ **Post date:** [May 15, 2020, 2:25pm UTC](https://community.homey.app/t/is-it-possible-to-connect-a-cavius-smoke-detector-868mhz/29910/2 "2020-05-15T14:25:49Z")
Basically, if you can’t find [an app](https://homey.app/nl-nl/apps/) for that particular device, it’s very likely that you can’t connect them to Homey. ---
**Author:** ![Joka](https://avatars.discourse-cdn.com/v4/letter/j/7feea3/32.png) [@Joka](https://community.homey.app/u/Joka)\ **Post date:** [May 15, 2020, 8:24pm UTC](https://community.homey.app/t/is-it-possible-to-connect-a-cavius-smoke-detector-868mhz/29910/3 "2020-05-15T20:24:25Z")
I’ve got 7 of these detectors and couldn’t find an app cause these one are build for homewizard so far as I know. And they use an encrypted connection. I decided to use them together with homey and homewizard with the HTTP request app. In my case it catches the http request and send an sound file to all sonos boxes in the house. ---
**Author:** ![Ralf\_Groot](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/ralf_groot/32/16474_2.png) [@Ralf\_Groot](https://community.homey.app/u/Ralf_Groot)\ **Post date:** [September 22, 2020, 12:40pm UTC](https://community.homey.app/t/is-it-possible-to-connect-a-cavius-smoke-detector-868mhz/29910/4 "2020-09-22T12:40:54Z")
Hi @Joka and @Hans_de_Bruyne, Do you have a possibility to couple the Cavius / Homewizard smoke detectors? I now use HTTP GET command every couple of minutes. But with a fire you will be notified directly. I hope that there will be a any news. ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/4/1/41d832b454a14091013226fe9acc32960eeda2e8.png) Edit: I have send a message to the Dutch representative of Cavius. ([https://cavius.nl/](https://cavius.nl/)) ---
**Author:** ![rvdeijk](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/rvdeijk/32/22542_2.png) [@rvdeijk](https://community.homey.app/u/rvdeijk)\ **Post date:** [September 22, 2020, 5:07pm UTC](https://community.homey.app/t/is-it-possible-to-connect-a-cavius-smoke-detector-868mhz/29910/5 "2020-09-22T17:07:35Z")
I though it’s on the [feature request](https://community.homey.app/t/app-homewizard-1-0-8-stable-1-0-8-beta/19267/112) list of the Homewizard app @Jeroen_Tebbens ---
**Author:** ![Jeroen\_Tebbens](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/jeroen_tebbens/32/62246_2.png) [@Jeroen\_Tebbens](https://community.homey.app/u/Jeroen_Tebbens)\ **Post date:** [September 22, 2020, 5:16pm UTC](https://community.homey.app/t/is-it-possible-to-connect-a-cavius-smoke-detector-868mhz/29910/6 "2020-09-22T17:16:59Z")
Yeah it is on the list, only lack the smoke detector myself so hadn’t put any effort into it yet. ---
**Author:** ![Joka](https://avatars.discourse-cdn.com/v4/letter/j/7feea3/32.png) [@Joka](https://community.homey.app/u/Joka)\ **Post date:** [September 22, 2020, 8:27pm UTC](https://community.homey.app/t/is-it-possible-to-connect-a-cavius-smoke-detector-868mhz/29910/7 "2020-09-22T20:27:05Z")
> [@Ralf\_Groot](#): > > I now use HTTP GET command every couple of minutes I‘m not realy sure how you realised your flow. You can configure that the homewizard send a request to homey directly when the smoke detector sends an alarm. So homey will react in seconds after smoke is detected. The when card is called Incoming get and looks different from your card. ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/5/d/5d2cd8b452c9d46b48cbe583c3aa4bb70d152bfa.jpeg) ---
**Author:** ![Marcel\_Ubels](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/marcel_ubels/32/18860_2.png) [@Marcel\_Ubels](https://community.homey.app/u/Marcel_Ubels)\ **Post date:** [September 23, 2020, 5:48am UTC](https://community.homey.app/t/is-it-possible-to-connect-a-cavius-smoke-detector-868mhz/29910/8 "2020-09-23T05:48:54Z")
It’s the THEN card ---
**Author:** ![Hans\_de\_Bruyne](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/hans_de_bruyne/32/25207_2.png) [@Hans\_de\_Bruyne](https://community.homey.app/u/Hans_de_Bruyne)\ **Post date:** [September 23, 2020, 11:24am UTC](https://community.homey.app/t/is-it-possible-to-connect-a-cavius-smoke-detector-868mhz/29910/9 "2020-09-23T11:24:00Z")
The reason I bought a Homey is because my Homewizard broke. So I’m not using Homewizard anymore. Is there a way (now or in the future) to connect the Cavius smoke detectors directly to Homey? ---
**Author:** ![Jeroen\_Tebbens](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/jeroen_tebbens/32/62246_2.png) [@Jeroen\_Tebbens](https://community.homey.app/u/Jeroen_Tebbens)\ **Post date:** [September 23, 2020, 11:55am UTC](https://community.homey.app/t/is-it-possible-to-connect-a-cavius-smoke-detector-868mhz/29910/10 "2020-09-23T11:55:39Z")
I’ve only put my share on the issue and made the smoke sensor supported in Homewizard app for Homey. I won’t spend time on Homey and Cavius directly since I don’t know the 868mhz protocol they. Same issue is how Energylink and Heatlink are handled. These are not directly supported either. ---
**Author:** ![Ralf\_Groot](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/ralf_groot/32/16474_2.png) [@Ralf\_Groot](https://community.homey.app/u/Ralf_Groot)\ **Post date:** [September 24, 2020, 12:39pm UTC](https://community.homey.app/t/is-it-possible-to-connect-a-cavius-smoke-detector-868mhz/29910/11 "2020-09-24T12:39:27Z")
@Jeroen_Tebbens: Did I understand that the Homewizard app does support the smokedetectors now? How can I make them visable in Homey? @Joka: What do I have to do in Homewizard to push the message to Homey? I see that you can only notify a mobile phone. ---
**Author:** ![Jeroen\_Tebbens](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/jeroen_tebbens/32/62246_2.png) [@Jeroen\_Tebbens](https://community.homey.app/u/Jeroen_Tebbens)\ **Post date:** [September 24, 2020, 12:44pm UTC](https://community.homey.app/t/is-it-possible-to-connect-a-cavius-smoke-detector-868mhz/29910/12 "2020-09-24T12:44:28Z")
@Ralf_Groot yes, am beta testing atm. There are some glitches with a doorbell sensor at the moment but the code is active for smoke detector. You can find it in the test area Homey Beta version is v1.1.4 > **[HomeWizard](https://homey.app/en-us/app/com.homewizard/HomeWizard/test/)** > > Helps you understand and save ---
**Author:** ![Ralf\_Groot](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/ralf_groot/32/16474_2.png) [@Ralf\_Groot](https://community.homey.app/u/Ralf_Groot)\ **Post date:** [September 24, 2020, 12:55pm UTC](https://community.homey.app/t/is-it-possible-to-connect-a-cavius-smoke-detector-868mhz/29910/13 "2020-09-24T12:55:48Z")
Super!! I can add the smoke detectors. I will try to get them in alarm (on a safe way…) and will tell you. Good job, very happy with this 🙂 ---
**Author:** ![Jeroen\_Tebbens](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/jeroen_tebbens/32/62246_2.png) [@Jeroen\_Tebbens](https://community.homey.app/u/Jeroen_Tebbens)\ **Post date:** [September 24, 2020, 1:29pm UTC](https://community.homey.app/t/is-it-possible-to-connect-a-cavius-smoke-detector-868mhz/29910/14 "2020-09-24T13:29:17Z")
Good let me know. Just remember that there will be up to 10 seconds delay. Homewizard is polled every 10 seconds so it will not be instant when smoke detector signal and notification goes from your sensor -\> Homewizard -\> Homey -\> App ---
**Author:** ![Joka](https://avatars.discourse-cdn.com/v4/letter/j/7feea3/32.png) [@Joka](https://community.homey.app/u/Joka)\ **Post date:** [September 24, 2020, 6:00pm UTC](https://community.homey.app/t/is-it-possible-to-connect-a-cavius-smoke-detector-868mhz/29910/15 "2020-09-24T18:00:51Z")
The smoke detector can’t do it by itself. You have to configure two things in Homewizard additionally. 1. IP switch for every smoke detector * * * The IP switch will send a http get command to homey (IP=Homeys IP): [http://192.168.xx.xx/api/app/com.internet/Rauchmelder/Schlafzimmer](http://192.168.xx.xx/api/app/com.internet/Rauchmelder/Schlafzimmer) smokedetector = Rauchmelder (same in every command) room name = Schlafzimmer (room where the smoke detector is placed) ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/e/8/e804e2c48d1a3cde7b609e1d7715922d75627c8e.png) 1. Task which triggers the IP switch for every smoke detector * * * ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/5/e/5e7c148436215260cdc21e02e6a0c3d2c2783949.png) In homey you can now receive the incoming http get: ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/5/1/519c27dbeb22268571b799dc534dd62bcf23e362.png) In the WHEN card you use the first tag to identify that the command belongs to a smoke alarm. a) Rauchmelder=smokedetector from topic 1. above. In the AND card you use the second tag to identify the room/smokedetector which sends the alarm b) Schlafzimmer=room name from topic 2. above. In the THEN card you can do what you want of course. I switch on all lights in the house. Open all raffstores/shutters. And send the room name to all sonos boxes in the house (sonos say app). The main benefit is that you have only a minimal delay between alarm time and homeys reaction. Attention: Homewizard doesn’t support HTTPS. Nevertheless you can activate the authorization option in the HTTP request App but then you have to make sure to use the whitelist with the Homewizard IP in addition. ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/1/6/16ea3cecff9529b34f1fedc001ac6762aec5e642.png) URL example: [http://192.168.xx.xx/api/app/com.internet/whitelist/Rauchmelder/Schlafzimmer](http://192.168.xx.xx/api/app/com.internet/whitelist/Rauchmelder/Schlafzimmer) ---
**Author:** ![Ralf\_Groot](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/ralf_groot/32/16474_2.png) [@Ralf\_Groot](https://community.homey.app/u/Ralf_Groot)\ **Post date:** [September 24, 2020, 9:35pm UTC](https://community.homey.app/t/is-it-possible-to-connect-a-cavius-smoke-detector-868mhz/29910/16 "2020-09-24T21:35:44Z")
Thanks for this ‘manual’. But unfortunately it will not work. When I put the http link in a browser I get the message: {“code”:401,“error”:“not\_logged\_in”,“error\_description”:“You need to log in to access this resource”} On this community site I found the error message in this post: [HTTP GET commandos naar Homey versturen](https://community.homey.app/t/http-get-commandos-naar-homey-versturen/8920/2) There they say you have to use https protocol, but HomeWizard does not accept that. What do I wrong? ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/f/6/f68c649d6d97a6b938d97671383e76feb51123c2.png) ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/c/2/c26f1f96b27bb17886c4169beb6439325bbb6349.jpeg) ---
**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\ **Post date:** [September 25, 2020, 5:28am UTC](https://community.homey.app/t/is-it-possible-to-connect-a-cavius-smoke-detector-868mhz/29910/17 "2020-09-25T05:28:00Z")
Did you disable authentication in the HTTP Request Flow Cards app? ---
**Author:** ![Rocodamelshekima](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/rocodamelshekima/32/8209_2.png) [@Rocodamelshekima](https://community.homey.app/u/Rocodamelshekima)\ **Post date:** [September 25, 2020, 11:00am UTC](https://community.homey.app/t/is-it-possible-to-connect-a-cavius-smoke-detector-868mhz/29910/18 "2020-09-25T11:00:49Z")
But didn’t we use the [cloudID](https://community.homey.app/t/http-get-commandos-naar-homey-versturen/8920/3) for this requests? Or when using the IP we used a dash instead of a dot? ---
**Author:** ![Ralf\_Groot](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/ralf_groot/32/16474_2.png) [@Ralf\_Groot](https://community.homey.app/u/Ralf_Groot)\ **Post date:** [September 25, 2020, 11:20am UTC](https://community.homey.app/t/is-it-possible-to-connect-a-cavius-smoke-detector-868mhz/29910/19 "2020-09-25T11:20:55Z")
@robertklep, thanks! That was the issue. I didn’t know there was an option for it in the HTTP Request app. I didn’t disable the authentication but whitelisted my Homewizard. ![Screenshot_20200925-131642_Homey](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/a/9/a9bdd505797a6b6ee6afd02e137813b09823eaa6.jpeg) So in Homewizard the IP switch is now: http:// HOMEY-IP/api/app/com.internet/whitelist/Rookmelder/Huiskamer @Joka, can you make an edit in your tremendous manual? ---
**Author:** ![Joka](https://avatars.discourse-cdn.com/v4/letter/j/7feea3/32.png) [@Joka](https://community.homey.app/u/Joka)\ **Post date:** [September 25, 2020, 4:34pm UTC](https://community.homey.app/t/is-it-possible-to-connect-a-cavius-smoke-detector-868mhz/29910/20 "2020-09-25T16:34:33Z")
> [@Ralf\_Groot](#): > > can you make an edit @Ralf_Groot: sure and done, thanks for the hint, good teamwork 😉 [Next page](https://community.homey.app/t/is-it-possible-to-connect-a-cavius-smoke-detector-868mhz/29910.md?page=2)