# Any experts on sending z-wave RAW **URL:** \ **Category:** Questions & Help\ **Tags:** z-wave\ **Created:** [May 4, 2019, 11:54am UTC](https://community.homey.app/t/any-experts-on-sending-z-wave-raw/12657 "2019-05-04T11:54:58Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Busta999](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/busta999/32/10053_2.png) [@Busta999](https://community.homey.app/u/Busta999)\ **Post date:** [May 4, 2019, 11:54am UTC](https://community.homey.app/t/any-experts-on-sending-z-wave-raw/12657/1 "2019-05-04T11:54:58Z")
I want to send to all my Greenwave Plugs every hour a z-wave raw command. ![19](https://us1.discourse-cdn.com/flex025/uploads/athom/original/2X/a/affb8b881d3c9c4d70f1da32c67f04d57aee0e3f.png) From the guide what is the RAW Command I need to send to set keep alive time to 255. I have not had to send raw z-wave commands before - I have been able to use the HA config for the device before. Any help would be appreciated. (for clarity, if I can send a Raw command to the Greenwave every hour, alternating between setting 254 and 255 then I can stop it it from resisting it is ‘lost’ every 4:15 hours - normally I would just use the HA to send a poll/test every hour to stop a timeout - but cant work out how to do that automatically) Athom support suggested that I use the Homey app every 4 hours and send a Parameter change to the 30+ devices. Not very practical, if I don’t wake up half way through the night every bedroom starts experiencing a very bright flashing in the room that feels like an Emergency beacon going off 🙂 - I am convinced there is a workaround to get Homey to poll somehow. ---
**Author:** ![JPe4619](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/jpe4619/32/9017_2.png) [@JPe4619](https://community.homey.app/u/JPe4619)\ **Post date:** [May 4, 2019, 3:19pm UTC](https://community.homey.app/t/any-experts-on-sending-z-wave-raw/12657/2 "2019-05-04T15:19:10Z")
![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/2X/7/76aba83f8f2c88c7b41fd1d8e3af12209feb49d6.jpeg) ---
**Author:** ![Busta999](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/busta999/32/10053_2.png) [@Busta999](https://community.homey.app/u/Busta999)\ **Post date:** [May 4, 2019, 3:33pm UTC](https://community.homey.app/t/any-experts-on-sending-z-wave-raw/12657/3 "2019-05-04T15:33:42Z")
Thanks for that. Got where to I understood how to construct the Raw ZWave, then worked out how Homey likes them presented, then identified a likely candidate that would effectively allow me to do a Poll by sending a Zwave Raw command. I came up with the Greenwave Flashing issue by sending the Raw command “0x25, 0x02” once an hour to the Greenwave - basically asking ‘what is your switch status?’ That resets the time out status. ---
**Author:** ![Da\_JoJo](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/da_jojo/32/8210_2.png) [@Da\_JoJo](https://community.homey.app/u/Da_JoJo)\ **Post date:** [May 5, 2019, 4:30am UTC](https://community.homey.app/t/any-experts-on-sending-z-wave-raw/12657/4 "2019-05-05T04:30:12Z")
Somehow the greenwave wants to give out an hourly report about its powerconsumption. There’s a wheel with numbers and colors so you can designate different greenwave nodes to different rooms/powerusage schemes. So the controller needs to poll the device hourly or it will time-out and think connection is broken and thus blinking the led. I just turned the led off, problem solved. ---
**Author:** ![Busta999](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/busta999/32/10053_2.png) [@Busta999](https://community.homey.app/u/Busta999)\ **Post date:** [May 5, 2019, 1:19pm UTC](https://community.homey.app/t/any-experts-on-sending-z-wave-raw/12657/5 "2019-05-05T13:19:48Z")
How did you turn off the led light? ---
**Author:** ![JPe4619](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/jpe4619/32/9017_2.png) [@JPe4619](https://community.homey.app/u/JPe4619)\ **Post date:** [May 5, 2019, 5:01pm UTC](https://community.homey.app/t/any-experts-on-sending-z-wave-raw/12657/6 "2019-05-05T17:01:54Z")
Yesterday I tried with 2 units PowerNode-6, to sent this command: ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/2X/f/fb74cbc5a66b0bb9b24ddd2c8c943aa32a6608ea.png) the result was for 1 unit, no more blinking whole day, the other unit was blinking as before, just some minutes ago, I did sent it again. Edit: This is not a solution, **does not work** for me! see for documentation [ https://www.vesternet.com/mwdownloads/download/link/id/1636/ ](https://www.vesternet.com/mwdownloads/download/link/id/1636/) ---
**Author:** ![Busta999](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/busta999/32/10053_2.png) [@Busta999](https://community.homey.app/u/Busta999)\ **Post date:** [May 5, 2019, 5:41pm UTC](https://community.homey.app/t/any-experts-on-sending-z-wave-raw/12657/7 "2019-05-05T17:41:44Z")
So far sending ‘0x25, 0x02’ every hour is stopping all (about 10 so far) from going to ‘lost’ mode. ---
**Author:** ![Da\_JoJo](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/da_jojo/32/8210_2.png) [@Da\_JoJo](https://community.homey.app/u/Da_JoJo)\ **Post date:** [May 6, 2019, 4:18am UTC](https://community.homey.app/t/any-experts-on-sending-z-wave-raw/12657/8 "2019-05-06T04:18:45Z")
[http://forum.micasaverde.com/index.php/topic,9212.0.html](http://forum.micasaverde.com/index.php/topic,9212.0.html) Here you can find all the info about the device. Its long time ago so i can’t remember what i wrote about it xD Edit: led off \> parameter 1 set to 255