Z-Wave battery status

Volkov

Hi all,

I am new to Homey and I have a couple of ZWave devices I would like to integrate with it. Some of these are battery-based. My question is: does Homey automatically send low battery notifications once a device signals this or do I need to configure a flow to monitor battery status for each and every device?

Thanks, regards,
Attila

bvdbos

You need to configure a flow, one per device if you're on firmware 1.3.x.

In firmware 1.5 there's a special function for that.. This firmware is only available as experimental at the moment and is to be expected as stable within a couple of weeks.

Volkov

Thanks for the quick answer. Then I guess I will wait for 1.5...

Volkov

Having upgraded to 1.5 I can see that there is a flow card An alarm turned on where I can select the Battery Alarm but unfortunately this does not help me much since my devices do not support the capability alarm_battery. Only the measure_battery capability is supported.

So I would need something like "The battery level of a device is below" with a parameter "battery level" and a tag: "Device name" to listen for all battery changes reported in the system and initiate the flow if a "measure_battery" message is received with a battery level lower than configured in the parameter. Then I could configure a notification.

1) Is there another option to check for low battery which I did not find?
2) If not, is the handling of low battery notifications planned in the future?

caseda

So you mean the "Sensor Value has changed" card that is also in the devices cards? with battery level in the dropdown

Volkov

Thanks, I have missed that card.
This only solves half my problem though.
I would like to change the screensaver of the LED ring in case a device reports low battery so that anyone who walks by Homey can see that there is a warning. I can do that with this card.
However, I would need to change the screensaver back to the original once the batteries are replaced. For this, I would need to know if the device reporting a high battery level is the same which reported the low level in the first place. I could of course save the name of the device in a variable and check that afterwards. This would work for a single device but what if multiple devices report low battery at the same time?
Any ideas if this can be done with flows (with a small number of flows, not a single flow for each device)?
I now have a solution using HomeyScript for this but I was wondering if this is also possible with flows only?

Willem

Why don't you send a notification to your smartphone, if one of your devices  battery levels is to low?
Easy and works alway's. This way you can't miss a low battery warning.

I use the 'Battery level changed' card of my device, THEN the logic app 'If the level is below 35%', DO send a notification to my smartphone.