# One flow for monitoring several devices **URL:** \ **Category:** Flows\ **Created:** [January 14, 2026, 7:53am UTC](https://community.homey.app/t/one-flow-for-monitoring-several-devices/149236 "2026-01-14T07:53:15Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Oyvind\_Lilleberg](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/oyvind_lilleberg/32/140892_2.png) [@Oyvind\_Lilleberg](https://community.homey.app/u/Oyvind_Lilleberg)\ **Post date:** [January 14, 2026, 7:53am UTC](https://community.homey.app/t/one-flow-for-monitoring-several-devices/149236/1 "2026-01-14T07:53:15Z")
Hi! Is it possible to make one flow for monitoring several devices, and then send a push notification when one of devices reports levels above or below a fixed setpoint. For instance one flow for monitoring all the devices with batteries, and when one of the devices reports battery below for example 20% it sends me a notification that says which device has low battery and the battery level. I have lots of Aqara temperature sensor, and I have tried the built in timeline notification in Homey. But then I get spammed with notifications telling me battery level is low, and then some minutes/hours later i reports that the same battery is Ok. So I need to build a flow that only send me a notification if the values stays low over a period of time. I also want to build the same flow for temperature, humidity and motion (when away) from the same sensors. I cant seem to find a then card that can bring out tags from the previous cards in the flow chain. Is the only solution to make one flow for each sensor? Hopefully this was understandable. ---
**Author:** ![Oyvind\_Lilleberg](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/oyvind_lilleberg/32/140892_2.png) [@Oyvind\_Lilleberg](https://community.homey.app/u/Oyvind_Lilleberg)\ **Post date:** [January 14, 2026, 7:58am UTC](https://community.homey.app/t/one-flow-for-monitoring-several-devices/149236/2 "2026-01-14T07:58:08Z")
So I found the solution myself. I didnt know I needed to connect the when card with the then card to get use of the tags from the when card. ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/c/4/c49e6d77b6f51192dad72acd1f253d2fad826c84.png)