# Trigger based on Solar radiation
**URL:** https://forum.ewelink.cc/t/trigger-based-on-solar-radiation/5691
**Category:** Free discussion
**Created:** [September 17, 2022, 9:34am UTC](https://forum.ewelink.cc/t/trigger-based-on-solar-radiation/5691 "2022-09-17T09:34:52Z")
**Posts on this page:** 10
**Page:** 1
### Author:  [@sdavids](https://forum.ewelink.cc/u/sdavids)
#### Post date: [September 17, 2022, 9:34am UTC](https://forum.ewelink.cc/t/trigger-based-on-solar-radiation/5691/1 "2022-09-17T09:34:52Z")
What is the best way to configure a device to switch on/off based on a solar radiation threshold? This way certain load devices can ONLY be activated when there is enough solar generation
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### Author:  [@yitie](https://forum.ewelink.cc/u/yitie)
#### Post date: [September 20, 2022, 2:21am UTC](https://forum.ewelink.cc/t/trigger-based-on-solar-radiation/5691/2 "2022-09-20T02:21:53Z")
Also interested in this, think there should be a solar panel or energy storage, like wall battery or sth.
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### Author:  [@sdk](https://forum.ewelink.cc/u/sdk)
#### Post date: [May 27, 2026, 3:31am UTC](https://forum.ewelink.cc/t/trigger-based-on-solar-radiation/5691/3 "2026-05-27T03:31:33Z")
Did you ever get an answer to this or figure something
out? If so please reply. Thanks in ada
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### Author:  [@sdk](https://forum.ewelink.cc/u/sdk)
#### Post date: [May 27, 2026, 3:33am UTC](https://forum.ewelink.cc/t/trigger-based-on-solar-radiation/5691/4 "2026-05-27T03:33:37Z")
Did you ever get an answer to this or figure something
out? If so please reply. Thanks in advance.
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### Author:  [@eerke](https://forum.ewelink.cc/u/eerke)
#### Post date: [May 27, 2026, 6:58pm UTC](https://forum.ewelink.cc/t/trigger-based-on-solar-radiation/5691/5 "2026-05-27T18:58:33Z")
I don’t think Sonoff have a luminosity sensor, but I have a weather station that connects to my iHost via MQTT. Bit overkill for this use. I’d have a look for a zigbee standard 3.0 that is tested and add add one to the zigbee hub. Pretty sure there is a compatible list of zigbee devices.
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### Author:  [@ayun](https://forum.ewelink.cc/u/ayun)
#### Post date: [May 28, 2026, 4:52am UTC](https://forum.ewelink.cc/t/trigger-based-on-solar-radiation/5691/6 "2026-05-28T04:52:09Z")
I use this [solar rain sensor zigbee](https://smarthomescene.com/reviews/tuya-zigbee-solar-rain-sensor-rb-srain01-review/), and it can connected to ewelink cube os.
It can detect the Illumination value but unfortunately can not give the rain / contact sensor value.
If you want just the device to check the illumination value in lux and have automation (create scene) with it, that device can work.
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### Author:  [@steni](https://forum.ewelink.cc/u/steni)
#### Post date: [June 4, 2026, 5:54pm UTC](https://forum.ewelink.cc/t/trigger-based-on-solar-radiation/5691/7 "2026-06-04T17:54:04Z")
```auto
```
Do you have any information on how often the sensor sends data to iHost? Is it time-based or when the lux changes. What is this interval?
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### Author:  [@ayun](https://forum.ewelink.cc/u/ayun)
#### Post date: [June 8, 2026, 7:37pm UTC](https://forum.ewelink.cc/t/trigger-based-on-solar-radiation/5691/8 "2026-06-08T19:37:01Z")
Based on the Ewelink Cube operation log for the device: _ **almost** _ every 1 minute the ewelink cube receives data, which means: sensor sends data every 1 minute.
The interesting part: you see from image above, there are 1 and 2 minutes interval; the lux in the 3rd column always changes value. That is why I highlight “almost” above.
I do not check further whether if sensor still have the same value as minutes before sensor not send data or still send data but ewelink cube filter it.
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### Author:  [@steni](https://forum.ewelink.cc/u/steni)
#### Post date: [June 8, 2026, 8:06pm UTC](https://forum.ewelink.cc/t/trigger-based-on-solar-radiation/5691/9 "2026-06-08T20:06:30Z")
But there is no option to adjust the interval for sending lux data?
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### Author:  [@ayun](https://forum.ewelink.cc/u/ayun)
#### Post date: [June 9, 2026, 12:21am UTC](https://forum.ewelink.cc/t/trigger-based-on-solar-radiation/5691/10 "2026-06-09T00:21:14Z")
No Setting / Option available in the Device Settings.
Debug log also has interval 1 minutes for illumination.
