topic Re: Notify when thermostat loose power or get disconnected in Smart Home Developer Forum

Notify when thermostat loose power or get disconnected

alkandery75 — Mon, 25 Aug 2025 16:06:40 GMT

Hi,

I'm trying to create an automation to notify when thermostat loose power or get disconnected or not available:

===============

metadata:

name: Roof Thermostat

description: When Thermostat Roof is not available, get a notification

automations:

- starters:

- type: device.state.OperationalState

device: Thermostat Roof - Roof

state: isOperational

is: false

actions:

- type: home.command.Notification

title: Notification

body: Thermostat Roof is not available

===============

Unfortunately, I'm getting error:

===============

[device.state.OperationalState] is an unknown type name. Expected types: [time.schedule, device.state, device.event, device.state.AppSelector, device.state.ArmDisarm, device.state.Brightness, device.state.Channel, device.state.ColorSetting, device.state.Cook, device.state.Dock, device.state.EnergyStorage, device.state.FanSpeed, device.state.Fill, device.state.HumiditySetting, device.state.InputSelector, device.state.LightEffects, device.state.LockUnlock, device.state.MediaState, device.state.MotionDetection, device.state.OccupancySensing, device.state.Online, device.state.OnOff, device.state.OpenClose, device.state.Record, device.state.Rotation, device.state.RunCycle, device.state.SensorState, device.state.StartStop, device.state.TemperatureControl, device.state.TemperatureSetting, device.state.Timer, device.state.Volume, device.event.DoorbellPress, device.event.MotionDetection, device.event.PersonDetection, device.event.PackageDelivered, device.event.AnimalOtherDetection, device.event.FaceFamiliarDetection, device.event.FaceUnfamiliarDetection, device.event.MovingVehicleDetection, device.event.Sound, device.event.PersonTalking, assistant.event.OkGoogle, home.state.HomePresence, etc].

===============

Please advise and help

Re: Notify when thermostat loose power or get disconnected

arm_dpe — Wed, 27 Aug 2025 23:51:52 GMT

Thanks for sharing.

Based on the error message, the issue is that device.state.OperationalState is not a valid device state type for automations. The test is explicitly telling you what types it does recognize, such as device.state.Online.

To fix this, you should change the trigger type in your automation to use a supported state that indicates the device's availability.

Try below script and let me know if it worked for you:

metadata:
name: Roof Thermostat
description: When Thermostat Roof is not available, get a notification
automations:
starters:
type: device.state.Online
device: Thermostat Roof - Roof
state: isOnline
is: false
actions:
type: home.command.Notification
title: Notification
body: Thermostat Roof is not available

Re: Notify when thermostat loose power or get disconnected

alkandery75 — Thu, 28 Aug 2025 08:00:21 GMT

Thanks for your help and support dear

It's accepted and correct now

Just one edit:

Instead of: state:

isOnline

Changed to: state:

Online

Since it gave me error with the first one

Your time and efforts are highly appreciated

Wish you a nice day

Re: Notify when thermostat loose power or get disconnected

JamieTiana — Sat, 30 Aug 2025 17:24:03 GMT

Check circuits